Lots of buzz on the internet about mobile ready this week. The official date seems to be April 21, 2015. Ana Hoffman has a great article on Google plus about this. Its a very good read. You can also check your site with a tool from Google called Mobile-Friendly Test.
Another great Article came out today on Mobile ready from John Dietrich
Its a easy to use tool for a quick check of your site. Also check out the Get Started to help you resolve the issue you might have