Cory Armbrecht coryarmbrecht

	#!/bin/bash

	# Functions ==============================================

	# return 1 if global command line program installed, else 0
	# example
	# echo "node: $(program_is_installed node)"
	function program_is_installed {
	# set to 1 initially
	local return_=1

	function go() {
	var userId = prompt('Username?', 'Guest');
	checkIfUserExists(userId);
	}

	var USERS_LOCATION = 'https://SampleChat.firebaseIO-demo.com/users';

	function userExistsCallback(userId, exists) {
	if (exists) {
	alert('user ' + userId + ' exists!');