Autism-friendly Touristic Spots detection app

I created a guide for the Rails Girls Galway workshop in which other guides have been merged, adapted and extended **for the scenario**: description, displaying and commenting touristic places and rate them with respect to their autism-friendliness. This application was requested by the [Galway Autism Partnership](http://www.galwayautismpartnership.com/) to support autistic adults during their travelings.

In particular, the new features that are introduced (not provided by any other guide) are:
* TDD using Guide
* Resource Rating
* Authenticated User (via devise) permission setting