huge refactorring of the library
added some new methods
added more ways to set the image + remove the opacity option(very expensive)
API cleanup + added docs
decreased the API level(changed the version number as well)
refactored the entire sample project, it could be made even better
improved the sample to add the clearAtEnd option
fix small bug related to the clearAtEnd option in the sample
removed the useless util package and the ProgressView class
added the xml attributes for the SquareProgressBar
fixed bug related to clearAtEnd options
changed the setMax and setProgress method to better handle corner cases
fixed the previous dumb way of handling the progress
more cleanup, proper renaming an removing not needed stuff
changed the sample to use some of the xml attributes