There is a Spin project (https://github.com/jstorimer/spin) which add the spin executable command (https://github.com/jstorimer/spin/blob/master/bin/spin). It should be listed in bundled_commands as well.
Added spin to bundled_commands (Bundler plugin)
@robbyrussell what do you think about this PR?
if this line follows this what does spin here?