s/worker-/hoodie-plugin-<pluginname>/ on `hoodie install <pluginname>`

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This commit was sponsored by The Hoodie Firm.
You can hire The Hoodie Firm:
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* * *

This commit was sponsored by The Hoodie Firm.
You can hire The Hoodie Firm:
http://go.hood.ie/thehoodiefirm
Merge pull request #32 from hoodiehq/plugins

s/worker-/hoodie-plugin-<pluginname>/ on `hoodie install <pluginname>`
Merge pull request #29 from hoodiehq/dev

recent dev work
[fix] redefinition of.. jshint false positive

http://jslinterrors.com/redefinition-of-a/
[minor] adds graceful-fs