Rename the method so that it won't conflict with Model.checkAccess

See https://github.com/strongloop/loopback/issues/239
Remove intermediate section headers from nav
Fix constructor JSDoc
Merge pull request #242 from strongloop/feature/fix-issue-239

Rename the method so that it won't conflict with Model.checkAccess
Bump version
Merge branch 'release/1.8.1' into production