Create float_label.xml

https://github.com/IanGClifton/AndroidFloatLabel/issues/6
solution for AndroidFloatLabel-API9 float_label shadowed by edit_text

https://github.com/IanGClifton/AndroidFloatLabel/issues/6
AndroidFloatLabel-API9 float_label shadowed by edit_text

https://github.com/IanGClifton/AndroidFloatLabel/issues/6
Merge pull request #1 from somayajisubs/API-9+-compatibility

solution for AndroidFloatLabel-API9 float_label shadowed by edit_text