fix defects: sources in maven repository is empty
Merge remote-tracking branch 'origin/master'
Update README.md
Update README.md
Update README.md
Update README.md
Add russian translation
Use exact support library version
Merge pull request #29 from makovkastar/ru-strings

Add russian translation.
Merge pull request #30 from makovkastar/patch-1

Use exact support library version.
remove javadoc/jar output
Fix readme file formatting.
Change button font.
Merge pull request #31 from ming13/readme-formatting

Fix readme file formatting
Change button font style.
show(boolean) toggles both in and out animation simultaneously for consistency
support javadoc generation
Set UndoBarController constructor to public, so you can use it in layout xml
Most of public method in UndoBarController has been deprecated, use undobar builder instead.
Use undobar builder  to show undobar
Support ImageSpan in undobar message.