Update README

README.md

@@ -71,11 +71,11 @@ There is a lot going on in the example above, but comments have been ommitted fo
 
 ### Building for the Browser
 
-When using Mach in a browser environment, you can save a few bytes by using the [es6-promise shim](https://github.com/jakearchibald/es6-promise) instead of [bluebird](https://github.com/petkaantonov/bluebird).
+When using Mach in a browser, you can save a few bytes by using the [es6-promise polyfill](https://github.com/jakearchibald/es6-promise) instead of [bluebird](https://github.com/petkaantonov/bluebird).
 
 Using [Browserify](https://github.com/substack/node-browserify):
 
-    $ browserify main.js --require es6-promise:bluebird > main-bundle.js
+    $ browserify main.js --require es6-promise:bluebird > bundle.js
 
 ### Issues