fixed incremental build cache assigned to the wrong options

Author: benholloway

lib/build/browserify.js

@@ -117,11 +117,11 @@ function create(opt) {
   function createInstance(files) {
 
     // browserify must be debug mode
-    var browserifyOpts = merge({}, options.browserify, {debug: true});
+    //  default to the shared watchify cache per watchify.args
+    var browserifyOpts = merge({}, watchify.args, options.browserify, {debug: true});
 
-    // watchify defaults to the shared watchify cache per watchify.args
     // watch is not supported
-    var watchifyOpts = merge({}, watchify.args, options.watchify, {ignoreWatch: /.*/});
+    var watchifyOpts = merge({}, options.watchify, {ignoreWatch: /.*/});
 
     // create bundler
     var bundler = watchify(browserify(browserifyOpts), watchifyOpts);