Append `--formula` arugment to "brew list" (#746)
Append `--formula` arugment to "brew list" (#746)

* Use CombinedOutput for brew list

* Print error

* Append `--formula` arugment to "brew list"
bitrise-io/bitrise-cli,bitrise-io/bitrise,bitrise-io/bitrise,bitrise-io/bitrise-cli