Update README.md

Included updates.
Update knockout.hotkeys.js

Use regular expression to match all (not just first, as was previous) instances of the "+" character that are followed by another "+", word, or digit. Thus allowing more combinations of hotkeys with special characters.
Update bower.json

Updated the version to signify the updated code.
Update bower.json

Updated the name of the module to show advanced attribute.
Update and rename knockout.hotkeys.js to knockout.hotkeys.adv.js

Renamed file, updated comments to show collaborator
Update bower.json
Update README.md
removed adv suffix