diff --git a/README.md b/README.md
new file mode 100644
index 0000000..38cd081
--- /dev/null
+++ b/README.md
@@ -0,0 +1,26 @@
+# php-is-personnummer [![Build Status](https://travis-ci.org/frozzare/php-is-personnummer.svg?branch=master)](https://travis-ci.org/frozzare/php-is-personnummer)
+
+Validate Swedish personal identity numbers.
+
+## Installation
+
+```
+$ composer require frozzare/is-personnummer 1.0.0
+```
+
+## Example
+
+```php
+\Personnummer::valid(6403273813);
+//=> true
+
+\Personnummer::valid('19130401+2931');
+//=> true
+```
+
+See [PersonnummerTest.php](tests/PersonnummerTest.php) for more examples.
+
+# License
+
+Copyright (c) 2014 Fredrik Forsmo
+Licensed under the MIT license.
diff --git a/composer.json b/composer.json
index 009e195..3d2d200 100644
--- a/composer.json
+++ b/composer.json
@@ -21,5 +21,10 @@
   "require": {
     "php": ">=5.3.0",
     "composer/installers": "~1.0"
+  },
+  "autoload": {
+    "files": [
+      "src/Personnummer.php"
+    ]
   }
-}
\ No newline at end of file
+}