bugfix getDrawable() is null when invalidate view is called

Fix square loupe when hardware accelerate is enable and android version below 18

resolve conflict

change on gradled

Update build.gradle

Chech for bitmap drawable

Added link to google play in readme

Add badge bintray into readme

update readme

update readme

Add title to readme

Add demo App

Make loupe effect widget

modify gradle for deploy

Add module lib into project