Added Maven description to README file [skip ci]

Author: smarek

README.md

@@ -19,6 +19,30 @@ Features
 - Optional built-in response parsing into **JSON** (JsonHttpResponseHandler)
 - Optional **persistent cookie store**, saves cookies into your app's SharedPreferences
 
+Maven
+-----
+You can now integrate this library in your project via Maven. There are available two kind of builds.
+
+**development snapshots**
+https://oss.sonatype.org/content/repositories/snapshots/com/loopj/android/android-async-http/
+```
+Maven URL: https://oss.sonatype.org/content/repositories/snapshots/
+GroupId: com.loopj.android
+ArtifactId: async-http-client
+Version: 1.4.4-SNAPSHOT
+Packaging: JAR or AAR
+```
+
+**releases, maven central**
+
+http://central.maven.org/maven2/com/loopj/android/android-async-http/
+```
+Maven URL: http://repo1.maven.org/maven2/
+GroupId: com.loopj.android
+ArtifactId: async-http-client
+Version: 1.4.3
+Packaging: JAR or AAR
+```
 
 Documentation, Features and Examples
 ------------------------------------