Added Bcrypt password hash comparison
Added passwordAlgorithm and salt field to Client model.
Added support for crypto library hashing.
Merge branch 'master' of https://github.com/jembi/openhim-core-js into bcrypt

Conflicts:
	package.json
Removed unneeded require
Merge pull request #59 from jembi/bcrypt

Hashing of passwords for basic auth