Removed unnecessary vendor prefixes

The only vendor prefixes that are needed are -webkit and -ms.
http://caniuse.com/#feat=transforms3d
Merge pull request #148 from thetallweeks/master

Removed unnecessary vendor prefixes
feat (directive): Nested carousel support
add failsafe ifs
docs(readme): add angular-touch req, fix #152
added conditional statement to prev/next fn

Prevent carousel controls from navigating past valid item range which would "break" navigation in the other direction.
added conditional to prev/next fn
Merge pull request #156 from pixelsailor/master

fix for bug #155 - prev/next buttons
Move html code from directives to templates.
Merge pull request #167 from onrik/master

chore: Move html code from directives to templates.
Update README.md

using `background-image` the angular way: https://docs.angularjs.org/api/ng/directive/ngStyle
Merge pull request #173 from mrzmyr/patch-1

Update README.md: using `background-image` the angular way
(feature) added vertical support
feat (showNextMode) option to show part of the next slide within the carousel
fix
fix temporary - wasn't handling the ng-click inside slide correctly
feat (directive): Nested carousel support
add failsafe ifs
(feature) added vertical support
feat (showNextMode) option to show part of the next slide within the carousel