initial i18n - spanish
Missing string & unnecesary strings removed
mocking __() for tests
Update README.mdown

Just to make it super clear which ruby and compass are we talking about :). Some stupidos like me had it messed #177
Merge pull request #178 from onnimonni/patch-1

Good addition. Thanks a lot for your contribution.
Merge pull request #175 from davidmh/i18n

Very good work! Sorry for our delay. With your code we'll implement soon the italian localization.