Merge pull request #737 from johnstew/578-bundle-output-tutorial

adding in tip for output for #578

Author: bebraw

content/get-started/index.md

@@ -114,6 +114,7 @@ index.js  1.56 kB       0  [emitted]  main
    [0] ./app/index.js 170 bytes {0} [built]
 
 ```
+T> Output may vary. If the build is successful then you are good to go.
 
 T> If you created a local `webpack@beta` build, be sure to reference `webpack` with `./node_modules/.bin/webpack` on the command line.