reduced number of calls to consent service for signing in.
added api references to README
Merge remote-tracking branch 'upstream/develop' into develop
added tests to verify up to date Consent works. Needed to change hasUserSignedMostRecentConsent to reflect how it actually works, not how I thought it worked.
Merge pull request #393 from SartoriusEarth/develop

Added new method to ConsentService to reduce number of calls to Dynamo when signing in.