Use the I18n from github

This is needed because of issue #13164[1] on rails.
The github version fixes this bug.

[1]: https://github.com/rails/rails/issues/13164
Merge pull request #268 from Helabs/mg-fix-i18n
Add FactoryGirl.lint config as recommended
Merge pull request #274 from Helabs/mg-factory_girl-lint-config

Add FactoryGirl.lint config as recommended
Update jumpup rake task.
Add heroku-postgresql:dev to default addons list.
Add changelog about jumpup.rake changes.
Merge pull request #276 from Helabs/tm-update-jumpup-rake-task

Update jumpup rake task and add heroku-postgresql:dev addon.
Fixes some minors on README
Bump version 0.0.13
Cut :scissors: left spaces on appplication.scss file.
[#271]
Update RSpec to 3.0.0.beta2

Update the RSpec and add some better config to handle mocks.
Merge pull request #287 from Helabs/mg-rspec-mock

Update RSpec to 3.0.0.beta2
Add the Roadmap
Merge pull request #289 from Helabs/mg-roadmap

Add the Roadmap
Merge pull request #283 from Helabs/remove-spaces-on-application-scss

Remove left spaces on appplication.scss file.
Improve default README

Close #280
Merge pull request #291 from Helabs/better-readme

Improve default README
Improve english message

Fix the english message
Merge master