Feature/i18n support

[sebfie]

Use I18n for this gem. I finished the work started by @lukaselmer in #115

[sebfie]

I created a gist with french translation : https://gist.github.com/sebfie/d1c1d94b2ebde6f8adc9

[vic700208]

Thanks! I created a gist with spanish translation: https://gist.github.com/vic700208/bc86bfbb12f4f0720cd9

[lukaselmer]

Very nice, thanks!

[booleanbetrayal]

This is the most comprehensive PR for localization support atm, so I'm going to close the others. Will try to take a look at in the next couple of days. In the meantime, any reason not to bundle those gists in this PR? Would be nice to get some additional validation maybe. =]

@sebfie - if it's not too inconvenient, could you squash those commits?

[sebfie]

How can I squash this commits? I do not know how to do that. @booleanbetrayal
Yes, I can add any gist.

[booleanbetrayal]

here is a decent example @sebfie ... but basically you want to run git rebase -i master, mark the first commit you made as "r" (re-word), and all other commits as "f" (fixup). Save that in your editor, and it'll begin rebasing. You'll then get another editor popup for the re-word, where you can provide a comprehensive commit message. Once you're done, and you've verified everything looks good, you can push your changes with git push -f (forced push).

Let me know if you run into any issues though. I have a preference of keeping PR merges as single commits, but if it's too troublesome, we can merge as is.

[sebfie]

I did it.

[booleanbetrayal]

Thanks all! I'll add the other translations in a separate commit.