refactor(@angular/cli): remove ng init & ng update (#4628)

BREAKING CHANGE: Removing the `ng init` & `ng update` commands because their current implementation causes more problems than it solves. Once RC is released, we won't need to use those to update anymore as the step will be as simple as installing the latest version of the CLI.

Author: Brocco

docs/documentation/update.md

@@ -24,7 +24,6 @@ module.exports = {
       'new': require('../commands/new').default,
       'generate': require('../commands/generate').default,
       'destroy': require('../commands/destroy').default,
-      'init': require('../commands/init').default,
       'test': require('../commands/test').default,
       'e2e': require('../commands/e2e').default,
       'help': require('../commands/help').default,

packages/@angular/cli/addon/index.js

@@ -29,6 +29,7 @@ export interface CompletionCommandOptions {
 
 const commandsToIgnore = [
   'easter-egg',
+  'init',
   'destroy',
   'github-pages-deploy' // errors because there is no base github-pages command
 ];

packages/@angular/cli/commands/completion.ts

@@ -7,6 +7,7 @@ const lookupCommand = require('../ember-cli/lib/cli/lookup-command');
 
 const commandsToIgnore = [
   'easter-egg',
+  'init',
   'destroy'
 ];
 

packages/@angular/cli/commands/help.ts

@@ -3,7 +3,6 @@ const Command = require('../ember-cli/lib/models/command');
 const InitCommand: any = Command.extend({
   name: 'init',
   description: 'Creates a new Angular CLI project in the current folder.',
-  aliases: ['u', 'update', 'i'],
   works: 'everywhere',
 
   availableOptions: [

packages/@angular/cli/commands/init.ts

@@ -8,7 +8,7 @@ const SilentError = require('silent-error');
 
 const NewCommand = Command.extend({
   name: 'new',
-  description: `Creates a new directory and runs ${chalk.green('ng init')} in it.`,
+  description: `Creates a new directory and a new Angular app.`,
   works: 'outsideProject',
 
   availableOptions: [