documented repo revision options
Run metadata-json-lint under validate rake task

Validates and performs basic lint of the metadata.json file if it
exists, skipping it if not.
Merge pull request #81 from logicminds/update_docs

documented repo revision options
Merge pull request #82 from domcleal/metadata-json-lint

Run metadata-json-lint under validate rake task
Update to version 0.8.2
Use forge_modules scm property to contact private forges
Merge branch 'feature/private_forge'