fix background color for hovered dropdown items in IE
set jumbotron bgcolor to green for IE
fix border-radius on input fields with append/prepend icons for IE
fix margin on pull-left dropdown sub menus
fix background color for googlebar and googlebar nav
fix background color on navbar-googlenav for IE
remove rounded corners on popover-title
mention google-select2 and google-datepicker compatibility
update demo url
update css3-google-buttons references to google-bootstrap
refactor buttons to fix #54 and fix #55