#yoplait A simple wrapper around the unofficial Yo API, allowing you to sign up new accounts, log in as existing users, block and unblock users, and, of course, send yos. ####yoplait#signUp(username, password, udid, cb) Sign up a new Yo account with the specified username and udid (device ID). Callback is in the form of cb(err, yoplaitUser). NOTE: As of around August 1st, 2014, Yo will no longer let accounts that don't follow their username format send Yo's (with one exception, underscores are allowed for some reason). The username format is all caps, alphanumeric, first character must be a letter.