Fit to exact width/height
Modify example
Merge remote-tracking branch 'origin/master'

Conflicts:
	SimpleCellLayout/build/source/r/release/com/jlnshen/widget/celllayout/R.java
	SimpleCellLayoutSample/build/res/all/debug/layout/activity_main.xml
	SimpleCellLayoutSample/build/source/r/debug/com/jlnshen/sample/simplecelllayout/R.java