Merge tag 'v1.5.5'

1.5.5
Update docs.json

Remove model-builder.js and sql.js
Update docs.json

Remove lib/model.js
Update datasource.js

Fix small typo
Enhance comparators for memory connector
Add more tests
Make sure the records are sorted by seq
Fix the typo
Add boolean tests
More JSDoc cleanup
Fix the comparison for null/boolean values
Convert null to NotFoundError for remoting call to DataAccessObject.findOne.
Add properties and other doc cleanup
Merge pull request #132 from strongloop/feature/memory-connector-comparator

Feature/memory connector comparator
Refactor relation into classes
Fix the hasMany through connection
Add support for hasOne
Clean up scope implementation
Adding back the remoting metadata
Allows skip or offset

See https://github.com/strongloop/loopback/issues/336