Merge pull request #2 from geertweening/leak-fix

[FIX] global var leaks
[FEATURE] Export API, add createUser function.
[CHORE] Bump patch to get api working.
Merge branch 'master' of github.com:stevenzeiler/ripple-gateway-data-sequelize

Conflicts:
	index.js
[FEATURE] Move createRippleTransction to API namesapce.
[CHORE] Bump minor to 4.0 to be safe.