Yang Wen

Hi Chris

When I ran the commend `cap install STAGES=production`, I came across the following issue.

```

cap aborted!

ArgumentError: invalid byte sequence in US-ASCII

(See full trace by running task with --trace)

cap aborted!

NoMethodError: undefined method `deploying?' for #<capistrano::application:0x007fe88153d1c8>

```

I ran this commend on my local machine, not server end.