Merge pull request #19 from lqez/master

Add explicit type for buttons to prevent unintended submitting
Specify master branche to test.
Merge branch 'master' of github.com:HackerWins/summernote
Correct typos: destory to destroy.
Update README.md
Update README.md
Update README.md
update readme
Remove jQuery.curstyles dependency: replace with jQuery.css
Move undo/redo stack to jQuery.data() for multiple editor
RecordUndo when space, enter, backspace key pressed and some refactoring.
Fix multiple editor bug #20
Update README.md
Update README.md