Merge pull request #206 from philips/fixup-copyright

chore(*.go): add copyright notice
feat(etcd_handlers): add the dashboard URL

/dashboard serves a dashboard now
feat(dashboard/README): initial commit
feat(dashboard): Initial commit of frontend code
chore(dashboard): checkin the dist directory

don't require everyone who wants to use the dashboard to have a full
frontend development setup.
bump(github.com/jteeuwen/go-bindata): 79847ab3e91ae5d2e1b18796c1795c78f29565d7
feat(dashboard): inital commit of resources package
feat(dashboard): introduce the in memory handler

the in memory handler gives etcd the ability to serve a dashboard
without on disk resources. This is the first time we are using the
/mod/ path too.

TODO: cleanup the mod stuff so it isn't hacked into etcd_handlers.