add offcanvas layout example based on bradfrost/this-is-responsive
add offcanvas layout example based on bradfrost/this-is-responsive
Merge branch 'offcanvas-example' of github.com:trumbitta/bootstrap into offcanvas-example
Merge branch 'offcanvas-example' of https://github.com/trumbitta/bootstrap into trumbitta-offcanvas-example
Offcanvas example update

* Remove plugin file and put JS inline
* Update grid layout to use tablet columns
* Switch from LESS to CSS for transition
* Pad footer sides for better mobile rendering
* Spacing cleanup