No Rails application found error

If I run `localer check .` or `localer check ~/path` it tells me that there is not rails app.
Poke around a little bit. 
```
You have already activated thor 0.20.0, but your Gemfile requires thor 0.19.4. Prepending `bundle exec` to your command may solve this.
```

Don't know how to deal with bundler. It's not like a big deal. Just reporting, maybe someone will have the same problem.
