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.
Demo for supporting ImageSpan.
jump to 1.4
Merge pull request #32 from ming13/button-font

Change button font
Merge branch 'master' of https://github.com/soarcn/UndoBar
Merge pull request #36 from jd-11/master

show(boolean) toggles both in and out animation simultaneously for consistency
Merge branch 'master' of https://github.com/soarcn/UndoBar
update comments
support generating apklib
materail style snakebar
onSaveInstanceState/onRestoreInstanceState
Rename undobar_materail_button.xml to undobar_material_button.xml

Minor correction :)