Load `pry-rails` in development and test env
Ensures `lib` is on the autoload path
Provides the basis for CSV import
Adds some sugar around mapping
Adds the basis of a simple `Firm` mapper
Bring it all together with a feature spec

* Introduces a basic feature spec to integrate all the parts
* Adds the `Lookup::Firm` model and associated migration
Adds a simple rake task for importing firms
Merge pull request #14 from moneyadviceservice/adviser-import

Provides simple importing for Firm CSVs