deploy instructions

builds/README.md

@@ -24,5 +24,8 @@ Then, shell into an instance and run a build by giving the name of the formula i
         Fetching Python v2.7.6 source...
         Compiling...
 
+If this works, run `bob deploy` instead of `bob build` to have the result uploaded to S3 for you.
+
+To speed things up drastically, it'll usually be a good idea to `heroku run bash --size PX` instead.
 
 Enjoy :)
\ No newline at end of file