doesn't make sense for hashes to use a wildcard
Use [] instead of * for wildcard
Merge pull request #1 from jordinl/master

Removed wildcard for hash. Use empty array for wildcard instead of *
Update README.md
Add documentation for loading rules
Merge remote-tracking branch 'jfoley/master'

Conflicts:
	README.md
	lib/transmogrifier/node.rb
	lib/transmogrifier/selector.rb
	spec/node_spec.rb
	spec/selector_spec.rb
	spec/transmogrifier_spec.rb