Add option to skip parsing options.

Author: mshima

lib/index.js

@@ -592,7 +592,10 @@ class Generator extends Base {
       this._options[name] = config;
     }
 
-    this.parseOptions();
+    if (!this.options.skipParseOptions) {
+      this.parseOptions();
+    }
+
     if (config.storage && this.options[name] !== undefined) {
       const storage =
         typeof config.storage === 'string'
@@ -642,7 +645,10 @@ class Generator extends Base {
 
     this._arguments.push(config);
 
-    this.parseOptions();
+    if (!this.options.skipParseOptions) {
+      this.parseOptions();
+    }
+
     return this;
   }