fixing artifactId for the snapshot build in the readme

Author: chilicheech

README.md

@@ -28,7 +28,7 @@ https://oss.sonatype.org/content/repositories/snapshots/com/loopj/android/androi
 ```
 Maven URL: https://oss.sonatype.org/content/repositories/snapshots/
 GroupId: com.loopj.android
-ArtifactId: async-http-client
+ArtifactId: android-async-http
 Version: 1.4.5-SNAPSHOT
 Packaging: JAR or AAR
 ```