Auto merge of #5486 - Serabe:patch-1, r=kellyselden

[ENHANCEMENT] Add `directory` option to `addon` command

The `addon` command is built upon `new` but there was no option for `--directory`. This PR just adds that option.

I found no place to add a test for the options.

lib/commands/addon.js

@@ -13,6 +13,7 @@ module.exports = NewCommand.extend({
     { name: 'skip-npm',   type: Boolean, default: false,   aliases: ['sn'] },
     { name: 'skip-bower', type: Boolean, default: false,   aliases: ['sb'] },
     { name: 'skip-git',   type: Boolean, default: false,   aliases: ['sg'] },
+    { name: 'directory',  type: String ,                   aliases: ['dir'] }
   ],
 
   anonymousOptions: [

tests/acceptance/help-test.js

@@ -61,6 +61,8 @@ ember addon \u001b[33m<addon-name>\u001b[39m \u001b[36m<options...>\u001b[39m' +
     \u001b[90maliases: -sb\u001b[39m' + EOL + '\
   \u001b[36m--skip-git\u001b[39m \u001b[36m(Boolean)\u001b[39m \u001b[36m(Default: false)\u001b[39m' + EOL + '\
     \u001b[90maliases: -sg\u001b[39m' + EOL + '\
+  \u001b[36m--directory\u001b[39m \u001b[36m(String)\u001b[39m' + EOL + '\
+    \u001b[90maliases: -dir <value>\u001b[39m' + EOL + '\
 ' + EOL + '\
 ember build \u001b[36m<options...>\u001b[39m' + EOL + '\
   Builds your app and places it into the output path (dist/ by default).' + EOL + '\
@@ -276,6 +278,12 @@ ember version \u001b[36m<options...>\u001b[39m' + EOL + '\
               aliases: ['sg'],
               key: 'skipGit',
               required: false
+            },
+            {
+              name: 'directory',
+              aliases: ['dir'],
+              key: 'directory',
+              required: false
             }
           ],
           anonymousOptions: ['<addon-name>']