Remove “Rails 3.1” in favor of “Rails”.
Remove “Rails 3.1” in favor of “Rails”.

As @aug-riedinger pointed out, now that Rails versions are larger, this sounds outtadate. 

Fixes #321 (what a nice issue number!). Also updated repo description on GitHub the same way.
adunkman/connect-assets,adunkman/connect-assets,inukshuk/connect-assets,codynguyen/connect-assets,dapriett/connect-assets,codynguyen/connect-assets