Add the ability to use kind_of matchers

This allows you to check the return type of functions, like this
example:

```
is_expected.to run.with_params('mymod/template.epp', { 'foo' => 'bar' }).and_return(kind_of String)
```

Author: binford2k

lib/rspec-puppet/matchers/run.rb

@@ -35,6 +35,8 @@ def matches?(func_obj)
             case @expected_return
             when Regexp
               return !!(@actual_return =~ @expected_return)
+            when RSpec::Mocks::ArgumentMatchers::KindOf, RSpec::Matchers::AliasedMatcher
+              return @expected_return === @actual_return
             else
               return @actual_return == @expected_return
             end