Merge pull request #18 from ebatiano/master

CheckBox + Button drawable imporvements
Merge pull request #19 from ebatiano/master

Various content implementations.
Merge pull request #20 from ebatiano/master

Added new features.
Update LICENSE.txt
Update README.md
Update Download.txt
Rename Download.txt to Download.md
Update Download.md
Merge pull request #1 from SitanaTeam/master

merge changes to fork