Merge pull request #5 from dcheesman/master

Urban Dictionary addition
Messages are now remembered.  Enhanced wolfram
added messages.json to gitignore list
removed messages.json
screwed up the messages file. Should be right now
removed messages.json again
added remember, show users, and update email commands.  updated README
erased the user_info.json file, updated ignore file
Update README.md
fixed urban dictionary added lastfm/
added rotten tomatoes rating keyword: movie