diff --git a/analyzer/questions.go b/analyzer/questions.go
index 4504aeb..3cc6fcb 100644
--- a/analyzer/questions.go
+++ b/analyzer/questions.go
@@ -1,15 +1,15 @@
 package analyzer
 
-import "github.com/AlecAivazis/survey/v2"
+import (
+	"github.com/AlecAivazis/survey/v2"
+	"mermerd/config"
+)
 
 func ConnectionQuestion() survey.Prompt {
 	return &survey.Input{
 		Message: "Connection string",
 		Suggest: func(toComplete string) []string {
-			return []string{
-				"postgresql://user:password@localhost:5432/dvdrental",
-				"mysql://root:password@tcp(127.0.0.1:3306)/db",
-			}
+			return config.ConnectionStringSuggestions
 		},
 	}
 }
diff --git a/config/config.go b/config/config.go
index 6232e13..a08f513 100644
--- a/config/config.go
+++ b/config/config.go
@@ -3,3 +3,4 @@ package config
 var ShowAllConstraints bool
 var Schema string
 var ConnectionString string
+var ConnectionStringSuggestions []string
diff --git a/config/config_file.go b/config/config_file.go
new file mode 100644
index 0000000..af8b7c3
--- /dev/null
+++ b/config/config_file.go
@@ -0,0 +1,85 @@
+package config
+
+import (
+	"errors"
+	"fmt"
+	"github.com/fatih/color"
+	"gopkg.in/yaml.v3"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+)
+
+const fileMode = os.FileMode(0600)
+
+type FileConfig struct {
+	ConnectionStrings []string `yaml:"connectionStrings"`
+}
+
+func initialConfig() FileConfig {
+	return FileConfig{
+		ConnectionStrings: []string{
+			"postgresql://user:password@localhost:5432/yourDb",
+			"mysql://root:password@tcp(127.0.0.1:3306)/yourDb",
+		},
+	}
+}
+
+func LoadConfigFile() error {
+	dirname, err := os.UserHomeDir()
+	if err != nil {
+		fmt.Println("Could not get home directory", err.Error())
+		return err
+	}
+
+	configFilePath := filepath.FromSlash(fmt.Sprintf("%s/.mermerd", dirname))
+	file, err := os.OpenFile(configFilePath, os.O_RDONLY, fileMode)
+	if errors.Is(err, os.ErrNotExist) {
+		file, err = createInitialConfig(configFilePath)
+	}
+
+	if err != nil {
+		fmt.Println("Could not open file", err.Error())
+		return err
+	}
+
+	fileContent, err := ioutil.ReadAll(file)
+	if err != nil {
+		fmt.Println("Could not read config file data", err.Error())
+		return err
+	}
+
+	var config FileConfig
+	err = yaml.Unmarshal(fileContent, &config)
+	if err != nil {
+		fmt.Println("Error reading content of config file", err.Error())
+		return err
+	}
+
+	ConnectionStringSuggestions = config.ConnectionStrings
+	return nil
+}
+
+func createInitialConfig(configFilePath string) (*os.File, error) {
+	color.Yellow("Config file does not exist. Creating a new one in %s", configFilePath)
+	file, err := os.OpenFile(configFilePath, os.O_RDWR|os.O_CREATE|os.O_TRUNC, fileMode)
+	configValue, err := yaml.Marshal(initialConfig())
+	if err != nil {
+		fmt.Println("could not create initial config", err.Error())
+		return nil, err
+	}
+
+	_, err = file.Write(configValue)
+	if err != nil {
+		fmt.Println("could not write to config file", err.Error())
+		return nil, err
+	}
+
+	err = file.Sync()
+	if err != nil {
+		fmt.Println("could not save initial config", err.Error())
+		return nil, err
+	}
+
+	return file, nil
+}
diff --git a/go.mod b/go.mod
index 574e7bb..40800bb 100644
--- a/go.mod
+++ b/go.mod
@@ -8,6 +8,7 @@ require (
 	github.com/fatih/color v1.13.0
 	github.com/go-sql-driver/mysql v1.6.0
 	github.com/jackc/pgx/v4 v4.14.1
+	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b
 )
 
 require (
diff --git a/go.sum b/go.sum
index 444ae9a..1a2e0a0 100644
--- a/go.sum
+++ b/go.sum
@@ -83,11 +83,13 @@ github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51/go.mod h1:C
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/konsorten/go-windows-terminal-sequences v1.0.2/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
+github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/pty v1.1.4/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/pty v1.1.8 h1:AkaSdXYQOWeaO3neb8EM634ahkXXe3jYbVh/F9lq+GI=
 github.com/kr/pty v1.1.8/go.mod h1:O1sed60cT9XZ5uDucP5qwvh+TE3NnUj51EiZO/lmSfw=
+github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/lib/pq v1.0.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
 github.com/lib/pq v1.1.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
@@ -201,10 +203,12 @@ golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8T
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/inconshreveable/log15.v2 v2.0.0-20180818164646-67afb5ed74ec/go.mod h1:aPpfJ7XW+gOuirDoZ8gHhLh3kZ1B08FtV2bbmy7Jv3s=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
diff --git a/main.go b/main.go
index 077f8c4..1bc3c23 100644
--- a/main.go
+++ b/main.go
@@ -10,6 +10,13 @@ import (
 )
 
 func main() {
+	err := config.LoadConfigFile()
+	if err != nil {
+		fmt.Println(err.Error())
+		util.ShowError()
+		return
+	}
+
 	flag.BoolVar(&config.ShowAllConstraints, "ac", false, "(allConstraints - default: false) Contain all constraints of selected tables, even though the table of the resulting constraint was not selected")
 	flag.StringVar(&config.Schema, "s", "", "(schema - default: asks) The schema that should be used")
 	flag.StringVar(&config.ConnectionString, "c", "", "(connectionString - default: asks) The connection string that should be used")
diff --git a/readme.md b/readme.md
index 0f7a9c2..c3b31a6 100644
--- a/readme.md
+++ b/readme.md
@@ -2,6 +2,11 @@
 
 Create [Mermaid-Js](https://mermaid-js.github.io/mermaid/#/entityRelationshipDiagram) ERD diagrams from existing tables.
 
+## Installation
+
+Just head over to the [Releases](https://github.com/KarnerTh/mermerd/releases) page and download the right executable
+for your operating system.
+
 ## Features
 
 * Supports PostgreSQL and MySQL
@@ -41,6 +46,17 @@ Some configurations can be set via command line parameters. The parameters can a
 resulting constraint is not in the list of selected tables. These tables do not have any column infos and are only
 present via their table name.
 
+## Config file
+
+Mermerd uses a yaml configuration file in your home directory called `.mermerd` (is created on first use).
+
+```yaml
+# These connection strings are available as suggestions in the cli (use tab to access)
+connectionStrings:
+  - postgresql://user:password@localhost:5432/yourDb
+  - mysql://root:password@tcp(127.0.0.1:3306)/yourDb
+```
+
 ## Connection strings
 
 Examples for connection strings:
@@ -67,8 +83,8 @@ The table constraints are analysed and interpreted as listed:
 
 ## Roadmap
 
+* [x] Configurable suggestions for connection string input
 * [ ] Unit tests
-* [ ] Configurable suggestions for connection string input
 * [ ] Support `}o--o|` relation (currently displayed as `}o--||`)
 * [ ] Improve output file naming
 * [ ] Take unique constraints into account