adding write to view

lib/file.js

@@ -7,6 +7,7 @@ var util = require('util');
  */
 
 var lazy = require('lazy-cache')(require);
+var write = lazy('write');
 var clone = lazy('clone-deep');
 var omit = lazy('object.omit');
 

lib/view.js

@@ -12,6 +12,7 @@ var lazy = require('lazy-cache')(require);
 var assign = lazy('assign-value');
 var clone = lazy('clone-deep');
 var omit = lazy('object.omit');
+var write = lazy('write');
 
 /**
  * Local dependencies
@@ -244,6 +245,39 @@ utils.delegate(View.prototype, {
     if (typeof view.path === 'undefined') {
       utils.error('View#validate `path` is a required field: ', view);
     }
+  },
+
+  /**
+   * Write the item to disk asynchronously.
+   *
+   * @param {String} `fp` Destination filepath.
+   * @param {Function} `cb` Callback function
+   * @returns {Object} Returns the instance for chaining.
+   * @api public
+   */
+
+  write: function (fp, cb) {
+    if (typeof fp === 'function') {
+      cb = fp;
+      fp = null;
+    }
+
+    if (typeof cb !== 'function') {
+      throw new Error('async `write` was called without a callback function.');
+    }
+
+    var dest = fp || this.dest.path;
+    var src = this.src.path;
+    var str = this.content;
+
+    if (str) {
+      write()(dest, str, cb);
+    } else {
+      copy()(src, dest, cb);
+    }
+
+    this.emit('write', dest);
+    return this;
   }
 });