Ianjorgensen/message image tag

This is the icon on notes project i worked on the hackathon, i want to code to be there so when we have icons we can use we can simply add the regex's and it will all just work. cc @jebeck  @nicolashery 
If you haven't yet, you should just delete your bower_components folder, and we don't need this in the .gitignore anymore. (A `git merge master` from this branch might be good.)