Add "cache" flag to API documentation

It might help to add the cache method to the API documentation.  When testing custom plugins, it's reasonable you'd want to turn caching off (rather than changing files every time).
Fix typo
Merge pull request #373 from kara/patch-1

Add "cache" flag to API documentation
An imperfect fix for multiple symlink creation.

As discussed here: https://github.com/duojs/duo/issues/369

The approach here is to simply swallow the error - ideally we shouldn't be creating
multiple symlinks but I needed an interim fix.
Merge pull request #375 from jacobstr/master

An imperfect fix for multiple symlink creation.
Release 0.8.9
adding way to check if something has already been included
Merge pull request #381 from dominicbarnes/included

adding way to check if something has already been included
allowing includes to require other named includes
adding test for include deps parsing
Merge pull request #383 from dominicbarnes/include-deps

Allowing includes to require other named includes
Release 0.8.10
Revert "Support "local" directive in component.json."

This reverts commit 4b01704094629ccd81c57e9fa0e5cf91d8cce61f.
This reverst commit 30c23a6ea26e758f8f22c1bb1b3728684e98788e.
Merge remote-tracking branch 'upstream/master'