Merge tag 'v1.3.1'

1.3.1
Updated doc link
Add contribution guidelines

Uses https://cla.strongloop.com
Add applications cache, settings ttlInSeconds, checkPeriodInSeconds, tests

Fix moved node-cache to dependencies
Merge pull request #55 from ariskemper/applications_cache

Add applications cache, settings ttlInSeconds, checkPeriodInSeconds, tes...
Bump version
Merge branch 'release/1.4.0' into production