Revert "`sprout` script excludes brew installed commands"
Revert "`sprout` script excludes brew installed commands"

Cookbooks require access to brew installed executables, ex
`ruby-install`

This reverts commit ccddf39d4cc30adb96e3ade5ffce0dc4e254aae3.

pivotal-sprout/sprout-chruby,pivotal-sprout/sprout-chruby