Fix some comments

lib/base.js

@@ -108,7 +108,7 @@ var Base = module.exports = function Base(args, options) {
     return function () {};
   };
 
-  _.defaults(this.options, this.fallbacks, {
+  _.defaults(this.options, {
     engine: engines.underscore
   });
 
@@ -121,8 +121,11 @@ var Base = module.exports = function Base(args, options) {
 
   this.conflicter = new Conflicter(this.env.adapter, this.options.force);
 
-  // Since log is both a function and an object we need to use Object.defineProperty
-  // instead of this.env.adapter.log.apply o similar approaches
+  // Mirror the adapter log method on the generator.
+  //
+  // example:
+  // this.log('foo');
+  // this.log.error('bar');
   this.log = this.env.adapter.log;
 
   // determine the app root
@@ -537,9 +540,6 @@ Base.prototype.hookFor = function hookFor(name, config) {
 /**
  * Return the default value for the option name.
  *
- * Also performs a lookup in CLI options and the `this.fallbacks`
- * property.
- *
  * @param {String} name
  */