adds some utility files to support the gem development
adds rspec development dependency and fixes some deprecation warnings
updates rspec to 3.0 and fixes some deprecation warnings
adds guard as development dependency and reobes the rspec binstub as well as adds the bin dir to the gitignore
adds a simple class to model bank data
makes banks behave like value objects
adds a new BankDb class and deprecates the old one to be able to search by bank_code and bic
adds some documentation for the bank db