Update version to 0.1.6alpha (#28)

* update version to 0.1.6alpha
* sync to latest primerj

Author: aardvark3

primer-android/AndroidManifest.xml

@@ -4,7 +4,7 @@
     package="net.bither"
     android:installLocation="internalOnly"
     android:versionCode="1"
-    android:versionName="0.1.5alpha">
+    android:versionName="0.1.6alpha">
 
     <uses-sdk
         android:minSdkVersion="9"