Added query string capability
Added query string capability

Modified app.js  to support admin commands in the querystring:

?default=tagname  - subscribes the client to “tagname” instead of
“default”

?name=foo - change the name of the client to “foo”

?subscribe=tagname1, tagname2….  - Subscribes the client to a list of
one or tags.

?unsubscribe=tagname1, tagname2… - Unsubscribes the client to a list of
one or more tags.

lonnen/corsica,lonnen/corsica,mozilla/corsica,mozilla/corsica