add register and password functionality
Merge branch 'user-functions'
Merge branch 'master' of github.com:credibility/dandb

Conflicts:
	src/Credibility/DandB/DandB.php
adding tests for dandb library
add doc comments
add tests for new user/password functions
add more missing tests
Merge pull request #2 from credibility/add-dandb-tests

Add dandb tests