adds teardown method to tabdrop
displays as selected item the html of the selected item
allows for text option to be a function that accepts wrapped collection
fixes unregister function
adds better event handling and removes duplication
Fix the unnecessary appearance of the dropdown

Fix appearing of the dropdown menu when there's enough room for last element in the row
http://i.imgur.com/0T3B8NJ.png
Merge pull request #4 from pirvudoru/master

text option can be a function that returns html +other improvements
Merge pull request #5 from pribilinskiy/patch-1

Fix the unnecessary appearance of dropdown
Fix tabs order, avoid appearance of tab header on next row

Avoid appearance of tab header on next row by rechecking offsets.
After pushing tabs, one of the pushed tabs may have `.active` class with bold font and that may result in undesirable push of the last visible tab header down to next row by the `li.tabdrop.active`
Update bootstrap-tabdrop.js
Fix for Bootstrap 3.3
Convert CRLF to LF