sethvargo/powify — pull request #29 by repinel (2014-10-22 16:25:07+00:00)
Title: Prevent error when command does not exist

Right now, if you misspell a command, powify will return something like:

```
The command `foo` does not exist!
powify/lib/powify/client.rb:19:in `run': undefined method `to_sym' for nil:NilClass (NoMethodError)
```

However, it could just say that the command does not exit, without failing over it.