Make Set() able to re-write nil type with map or array

README.md

@@ -1,19 +1,8 @@
-# Config [![wercker status](https://app.wercker.com/status/b4e8561d9a711afcb016bf0018e83897/s/ "wercker status")](https://app.wercker.com/project/bykey/b4e8561d9a711afcb016bf0018e83897) [![GoDoc](https://godoc.org/github.com/olebedev/config?status.png)](https://godoc.org/github.com/olebedev/config)
+# Config [![GoDoc](https://godoc.org/github.com/rusriver/config?status.png)](https://godoc.org/github.com/rusriver/config)
 
 Package config provides convenient access methods to configuration
 stored as JSON or YAML.
 
-This is a fork of the [original version](https://github.com/moraes/config).
-This version extends the functionality of the original without losing compatibility.
-Major features added:
+This is a fork of the A fork of [olebedev/config](https://github.com/olebedev/config),
+which in turn is a fork of [original version](https://github.com/moraes/config).
 
-- [`Set(path string, value interface{}) error`](http://godoc.org/github.com/olebedev/config#Config.Set) method
-- [`Env() *config.Config`](http://godoc.org/github.com/olebedev/config#Config.Env) method, for OS environment variables parsing
-- [`Flag() *config.Config`](http://godoc.org/github.com/olebedev/config#Config.Flag) method, for command line arguments parsing usign pkg/flag singleton
-- [`Args(args ...string) *config.Config`](http://godoc.org/github.com/olebedev/config#Config.Args) method, for command line arguments parsing
-- [`U*`](https://godoc.org/github.com/olebedev/config#Config.UBool) methods
-- [`Copy(...path) (*config.config, error)`](https://godoc.org/github.com/olebedev/config#Config.Copy) method
-- [`Extend(*config.Config) (*config.Config, error)`](https://godoc.org/github.com/olebedev/config#Config.Extend) method
-- [`Error() error`](https://godoc.org/github.com/olebedev/config#Config.Error) method to show last parsing error, works only with `.Args()` method
-
-Example and more information you can find [here](http://godoc.org/github.com/olebedev/config).

config.go

@@ -509,7 +509,7 @@ func Set(cfg interface{}, path string, value interface{}) error {
 				c[part] = value
 			} else {
 				// if exists just pick the pointer
-				if va, ok := c[part]; ok {
+				if va, ok := c[part]; ok && va != nil {
 					point = &va
 				} else {
 					// is next part slice or map?