Merge pull request #1 from furtal/master

Fixed readme
refactored should update into distinct file. Should update now checks inside map and reduce functions for each view to determine if document has changed
Merge branch 'master' of github.com:nisaacson/couchdb-update-views

Forgot to merge in readme changes before pushing new should update code
version bump
added missing cradle dep and bumped version
updated optimist to latest version and fixed david badge url