Delete api-geopoint.md

This is now provided via JSDoc.
Delete api-datasource.md

This is now covered in JSDoc.
Delete api-model.md

Most of this information is provided in JSDoc.  The remainder is in http://docs.strongloop.com/display/DOC/Model and will be moved to other articles ASAP.
Removed old .md files from API docs

This content is now provided elsewhere.
Update docs.json

Removed access-context.js
Update JSDoc
Added middleware and API doc headings
Fixup JSDocs; note: updateOrCreate function alias pulled out on separate line for docs
Allow the creation of access token to be overriden
Use constructor to reference the model class
Merge pull request #314 from strongloop/feature/allow-custom-token-creation

Allow the creation of access token to be overriden
Bump version
Merge branch 'release/1.8.6' into production