Add RTL support

Author: hannesa2

MPChartLib/src/main/AndroidManifest.xml

@@ -1,13 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest>
-
- <!--  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
     <application
         android:allowBackup="true"
-        android:icon="@drawable/ic_launcher"
-        android:label="@string/app_name"
-        android:theme="@style/AppTheme" >
-    </application> -->
+        android:supportsRtl="true" />
 
 </manifest>