✨ ghost install local command shortcut

- ghost install local will install the latest version but bypass many of the fancier config options. this is useful for theme developers who just want to get a quick install of ghost running

lib/commands/install.js

@@ -27,7 +27,8 @@ module.exports = BaseCommand.extend({
             findVersion = require('../utils/version'),
             Config      = require('../utils/config'),
             self        = this,
-            installPath, dir, blogUrl;
+            local       = false,
+            installPath, dir;
 
         // Dir was specified, so we make sure it exists and chdir into it.
         if (options.dir) {
@@ -42,6 +43,11 @@ module.exports = BaseCommand.extend({
             return Promise.reject('Current directory is not empty, Ghost cannot be installed here.');
         }
 
+        if (version === 'local') {
+            local = true;
+            version = null;
+        }
+
         return findVersion(version).then(function runDoctor(resolvedVersion) {
             version = resolvedVersion;
             installPath = path.join(process.cwd(), 'versions', version);
@@ -75,9 +81,17 @@ module.exports = BaseCommand.extend({
             cliConfig.set('cli-version', options.parent._version)
                 .set('active-version', version).save();
 
+            // If 'local' is specified we don't need to run the config command
+            if (local) {
+                return Promise.resolve();
+            }
+
             return self.runCommand('config', null, null, {return: true});
-        }).then(function ask(config) {
-            blogUrl = config.url;
+        }).then(function ask() {
+            // If 'local' is specified we will automatically start ghost
+            if (local) {
+                return Promise.resolve({start: true});
+            }
 
             return self.ui.prompt({
                 type: 'confirm',
@@ -90,7 +104,7 @@ module.exports = BaseCommand.extend({
                 return Promise.resolve();
             }
 
-            return self.runCommand('start', require('url').parse(blogUrl).hostname);
+            return self.runCommand('start', {development: local});
         });
     }
 });