[BUG] Return transaction on getpayment.
Merge pull request #70 from ripple/hotfix-get-payment

Hotfix get payment
Merge branch 'master' of github.com:ripple/ripple-rest
[BUG] Fix /v1/accounts/{:account}/payments/{:hash}
[CHORE] Added Coveralls and Istanbul for code coverage
[CHORE] Adding Coveralls.io

Conflicts:
	package.json
[CHORE] Add CONTRIBUTING.md from ripple client.
typo fixes
[TEST] Major refactoring + testing of payments, notifications, transactions

Conflicts:
	lib/transactions-lib.js
	package.json
[CHORE] Bump minor version, release notes.