leejarvis/slop — pull request #143 by KushalP (2014-07-17 16:00:42+00:00)
Title: Default values on options are printed in the help message

When a user provides a default value for an option, e.g.

```ruby
on :n, :name=, 'Your name', :default => 'Lee'
```

Show the value in the help message, e.g.

```
" -n, --name Your name (default: Lee)"
```