removed deprecated express.createServer()
removed deprecated express.createServer()

removed unecessary util and flash dependencies and updated the way flash
messages are handled for express3 example

sainreddygh/passport-local,rhgksrua/passport-local,nwinkler/passport-local,eiriklv/passport-email-verification,jaredhanson/passport-local,curtislacy/multi-passport,fscherwi/passport-local,terebentina/passport-local,ivanml/passport-local,shikhardb/passport-local