Merge tag 'v1.2.3'

v1.2.3
Update docs.json

Remove non-API docs.
Update docs.json

Add subtitles for model and type objects.
Add properties/methods to DataSource from ModelBuilder
Merge pull request #43 from strongloop/feature/fix-regression

Add properties/methods to DataSource from ModelBuilder
Bump version
Merge branch 'release/1.2.4' into production