Add rspec for testing.
Add nokogiri to gemspec.

Nokogiri will provide the default SAX parser implementation.
Add nokgoiri sax parser support.
Merge branch 'feature_nokgogiri_sax_parser' into develop
Add rspec config file to project
Rename Document to SaxDocument
Add method that resets class variable values to nil.
Merge branch 'feature_sax_parser_setting' into develop
Add badgerfish sax handler.
Merge branch 'feature_sax_handler' into develop
Add REXML based sax parser
Merge branch 'feature_rexml_sax_handler' into develop
Remove dependency on Nokogiri gem
Remove Nokogiri referece from REXML spec
Merge branch 'feature_remove_nokogiri' into develop
Remove require of old nokogiri parser
Store sax_parser in module instance variable.
Add xml stream which converts xml io into badgerfish
Add integration specs to verify conversion against canonical examples.

Examples can be found here: http://badgerfish.ning.com/
Merge branch 'feature_xml_stream_parser' into develop