Merge tag 'v1.2.11'

1.2.11
Add contribution guidelines

Uses https://cla.strongloop.com
Add syntax highlighting styles & highlight threshold.

Previously, highlighting classes were being added to the DOM but had no CSS
so the user just saw black - a lot of CPU usage for nothing.

These styles now attractively and minimally style resposes so long as
they are below a certain threshold, as well as model schemas.

The highlightSizeThreshold fixes the long hang users would
see when large responses were returned.
Merge pull request #56 from STRML/syntaxHighlighting

Add syntax highlighting styles & highlight threshold.
Sort endpoints by letter.

Merged from swagger-ui's index.html.

Previously, endpoints were sorted in the order they were defined.
Merge pull request #55 from STRML/sortEndpoints

Sort endpoints by letter.
swagger: allow cross-origin requests

Add CORS middleware to the swagger app.

Add a configuration option allowing developers to disable CORS.
Merge pull request #53 from strongloop/feature/add-cors

swagger: allow cross-origin requests
1.3.0
Merge branch 'release/1.3.0' into production