Merge pull request #38 from chastell/add_wrug

Add Warsaw Ruby Users Group
Sorry of course I forgot to take the structure into account

This reverts commit c11a8519efcbd5a93a87ee5b5f8f04869e73f45d.

* will stay as is for now, although it sucks a bit locally :(
* and of course I just pushed it to gh-pages and did not to master
Added license section to the spanish version of the BCoC.
Added license section to the english version of the BCoC.