Merge pull request #5 from fguillen/master

Some improvements

- Add rake test command
- Remove ActiveSupport dependency
- Add date validations
- Add spanish bank account number validation
Bump version 0.1.0
Update Changelog and Readme
added + (plus) to the valid characters in email to support valid email addresses like moomerman+test@example.com, includes test
Merge pull request #6 from moomerman/master

Email regex should support + char for valid email addresses like moomerman+test@example.com
add ruby-version to gitignore
bump version 0.1.1
fix readme
Merge branch 'fguillen' into merging