added gitignore

git-svn-id: http://plugins.svn.wordpress.org/memcachier/trunk@700413 b8457f37-d9ea-0310-8a92-e5e31aec5664
removed link to demo site

git-svn-id: http://plugins.svn.wordpress.org/memcachier/trunk@700414 b8457f37-d9ea-0310-8a92-e5e31aec5664
Tested with 3.9