feat(setup): deprecate setup task

**BREAKING CHANGE**: the setup task is deprecated in favor of using gulp
hooks.

lib/ionic/setup.js

@@ -1,71 +1,12 @@
-var Task = require('./task').Task,
-    fs = require('fs'),
-    path = require('path'),
-    argv = require('optimist').argv,
-    exec = require('child_process').exec,
-    Q = require('q'),
-    IonicProject = require('./project'),
-    IonicAppLib = require('ionic-app-lib'),
-    Setup = IonicAppLib.setup,
-    Utils = IonicAppLib.utils,
-    colors = require('colors');
+var Task = require('./task').Task;
 
 var IonicTask = function() {};
 
 IonicTask.prototype = new Task();
 
-IonicTask.prototype.run = function(ionic) {
-  if( argv._.length < 2 ) {
-    return ionic.fail('Missing setup task command.', 'setup');
-  }
-
-  var self = this;
-  var tasks = argv._.slice(1);
-  var promises = [];
-
-  var promise = Q();
-
-  for (var x = 0; x < tasks.length; x++) {
-    try {
-      (function() {
-        //create closure for task
-        var task = self.runSetupTask(tasks[x]);
-        // console.log('Task: ', task);
-        promises.push(task);
-      })();
-    } catch (ex) {
-
-    }
-  }
-
-  promises.forEach(function(task) {
-    // console.log('Task foreach:', task);
-    promise = promise.then(function(){ return task(process.cwd()); });
-  });
-
-  promise
-  .fin(function() {
-    console.log('Ionic setup complete'.green.bold);
-  })
-  .catch(function(error) {
-    console.log('Error from setup - ' + error);
-  });
-
-};
-
-IonicTask.prototype.runSetupTask = function runSetupTask(setupTask) {
-  switch (setupTask) {
-    case 'sass':
-      return Setup.sassSetup;
-      break;
-    case 'facebook':
-      return Setup.setupFacebook;
-      break;
-    default:
-      var errorMessage = 'Invalid setup task command: ' + setupTask;
-      console.log(errorMessage);
-      return Q(errorMessage);
-  }
+IonicTask.prototype.run = function() {
+  //TODO link to gulp hook docs
+  console.log('The setup task has been deprecated.\n');
 };
 
 exports.IonicTask = IonicTask;