We should not lookup for .yo-rc.json and change cwd when running help.

Author: mshima

lib/index.js

@@ -186,6 +186,12 @@ class Generator extends EventEmitter {
     });
 
     this.resolved = this.options.resolved || __dirname;
+    this.description = this.description || '';
+
+    if (this.options.help) {
+      this.options.localConfigOnly = true;
+    }
+
     this.env = this.options.env;
 
     // Make sure we have a full featured environment.
@@ -223,8 +229,6 @@ class Generator extends EventEmitter {
 
     this.fs = require('mem-fs-editor').create(this.env.sharedFs);
 
-    this.description = this.description || '';
-
     // Place holder for run-async callback.
     this.async = () => () => {};