Added version 1.2 to trunk & moved 1.1 to tags/1.1/ directory.

git-svn-id: https://plugins.svn.wordpress.org/responsive-image-slider/trunk@933922 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updated change log.

git-svn-id: https://plugins.svn.wordpress.org/responsive-image-slider/trunk@933924 b8457f37-d9ea-0310-8a92-e5e31aec5664