move ActionBarSherlock lib, add gradle build files

libraries/ActionBarSherlock/README.md

@@ -0,0 +1,15 @@
+ActionBarSherlock Library
+=========================
+
+This folder contains the main library which should be linked against as an
+Android library project in your application.
+
+For more information see the "Including In Your Project" section of the
+[usage page][1].
+
+
+
+
+
+
+ [1]: http://actionbarsherlock.com/usage.html