[FIX] change PORT to lowercase
Merge pull request #155 from nerdylocks/payments-config-port

[FIX] change PORT to lowercase
[FEATURE] add memo field support
[TASK] change TypeError to InvalidRequestError

so they properly get handled by the error-handler and result in 400's
[FIX] setting test ledger mismatch
[TASK] cleanup unused
[TASK] move memo tests to payment-test as post payment tests
Merge pull request #154 from geertweening/develop

Memo field support
[TASK] bump ripple-lib to 0.8.2
[DOC] update release notes
[TASK] bump version to 1.3.0-rc2
Fix unnecessary requests in /balances
[FIX] check and validate issuer upon payment
[TEST] check for successful and failing payments

check for failing and passing cases if issuer is provided or not
[FIX] handle error if issuer is not provided

 handle error if issuer is not provided for non-XRP payments
[TASK] add issuer's address to the addresses.js
[TASK] add submission and response fixtures

add submission and response fixtures for success/failing
[TASK] remove white space