lock inherited resources to 1.4.x in gemspec instead of Gemfile
Add credential info for the test rails app to the docs.
Merge pull request #3229 from agrobbin/inherited-resources-1-4-1

Lock inherited resources to 1.4.x in gemspec instead of Gemfile
Merge pull request #3230 from fmendez/specify-test-credentials-in-docs

Add credential info for the test rails app to the docs.