rap1ds/ruby-possibly — pull request #3 by wycleffsean (2014-07-18 03:26:43+00:00)
Title: return None when a Some doesn't respond to a method

also wrap result of enumerable methods with Maybe when nil

```ruby
# before
Maybe("Some Value").does_not_exist.or_else{ false } # NoMethodError
Maybe([]).first.children # NoMethodError

# after
Maybe("Some Value").does_not_exist.or_else{ false } # false
Maybe([]).first.children # Maybe::None
```