Merge tag 'v1.0.4'

1.0.4
Update postgresql.js

Fixed small issue in updateOrCreate.  The ids is attribute on props not a function
Merge pull request #12 from kesavkolla/patch-1

Update postgresql.js
Fix comparison for null/boolean values
Merge pull request #13 from strongloop/feature/fix-comparison

Fix comparison for null/boolean values
Use base connector and add update support
Remove leading spaces
Merge pull request #16 from strongloop/feature/add-update

Use base connector and add update support
Bump version
Merge branch 'release/1.1.0' into production