Add a _clone suffix to id attributes in clones

This helps preserve the funcitonality of other plugins that require
unique id attributes. See issue #622.
Merge pull request #799 from woothemes/release-2-2-0

Release 2.2.0
Updates minified JavaScript file.
fix underline to IE10
Fix JavaScript lint errors, missing semicolons and parseInt second argument
issue: IE10 fixes made for flexslider
Fixes #941.
Merge pull request #892 from lancewillett/master

Fix JavaScript lint errors, missing semicolons and parseInt argument
Changes version number to 2.3.0-bleeding.
Merge pull request #942 from thomasgriffin/master

Changes events to use on( eventType ). Fixes #941.
Updates the readme file to mention 2.3.0-bleeding.
Merges #628 into master.
Merges #629.
Merge pull request #855 from holaideas/patch-1

Fixes underline on next/previous arrows in Internet Explorer 10.
Merges #900.
Address Issue #946

Have tested with both synced and un-synced sliders in normal and carousel mode. All existing demos work.