Update README.md
Added methods Whitelist, Blacklist and Dob #43
Master to Chris Renton
Date of birth refactored and tested
Blacklist and Whitelist refactored plus code fomat
Updated readme
Added black and white list tests
At least one validator tested
Added equal to tests
Added equal to tests
Added unique validator tests

Fixed bug in services
Added not equal to validator tests
Add ability to specify decimal places #30
Update README.md
Merging up