[TASK] update ripple-lib to 0.9.0-rc5
[TEST] un-skip tests that were invalid secret related

this was fixed by reducing the secret approximation loop logic in ripple-lib
[DOC] update configuration history
[DOC] remove contributors doc

github shows this information already
[FIX] assume when destination amount issuer is not specified that the user means to use the destination account as the issuer
[TEST] update test cases
[TEST] remove console log
[TEST] update test to use skip method instead of xit
[TEST] update equal to strictEqual
[TEST] remove old duplicate test case
Merge pull request #184 from boxbag/payments-destination-issuer-fix

[TASK] update submit payments api to gracefully handle missing destination amount issuer
Merge pull request #185 from geertweening/doc/configuration

[DOC] update configuration history
[DOC] update README with api updates
[TASK] update paths API to set source amount issuer as the source account by default
Merge pull request #186 from boxbag/source-amount-issuer-fix

[TASK] update paths API to set source amount issuer as the source account by default
[TASK] remove Dockerfile

Removing the Dockerfile. The current Dockerfile doesn't work with the latest of rippl-rest and we have no active maintainer.
Add get notifications test
Fix merge conflicts
Cleanup
Move utils to the only test that uses them