Fix #to_json signature to be compatible with 'json' gem and Ruby's native 'json' library support, so that DeepStruct::DeepWrapper can be nested inside other hashes.
Bump version to 0.0.6.
Fix #respond_to? to call super, so native methods return true.
Fix spelling error indiffrently -> indifferently.
Bump to 0.0.7.
Merge pull request #11 from bengler/master

Fix JSON problem