De-indent private methods

I think I was drunk or something when I made that design decision.
Add spec for subscribes matcher
Add features for subscription support
Fix typos in notifications documentation
Add subscribes matchers
Add `to_subscribe` example to the README
Add a chainable timing matcher to the README
Release 3.2.0
Update README for stubbing nodes on the Chef Server
Add a #last_error_for_chefspec method to RSpec::Matchers::BuiltIn::RaiseError

Allows ExpectedError class to access the @expected_error object directly
without stomping on the already exising #expected_error method from
RSpec.
Exit with the correct status
Update documentation for stub_data_bag
Require RSpec raise_error before opening the class
Add doc/example of node.automatic
Fix silly typo
Cleanup README changes [ci skip]
Fix method arity and docs on stub_node
Add real coverage filters for resource reporting

Fixes #361
Shorten filenames for resource reporting if possible
Align README params [ci skip]