ImageAreaPickerActivity: Use aspect ratio as float value, add the ability to set init rectangle area highlight.
Make class RotateBitmap public
Change type of initImageArea to Rect from RectF
Add Method getScaleFromImageToScreen in ImageAreaPickerActivity
use % part instead of pixel value when setup picker view
Implement text placer, ugly codes, and with baseline bug
Offset text descent
Return RectF in method getCropRectOnScreen
BUG....Shake when setTextScaleX,
Add method stop picker
Add method to get image raw width and height
Bug fix when invoke stopPicker before setupPickerView
HighlightView add option "mustInsideImage ", add more getter and setter
HighlightView add option "ensureVisable"