remove unneeded tests

I added this test while setting up travis, but we do not
need it anymore
feat(XML tokenizer): Add a XML/HTML tokenizer with tests

introduce a XML/HTML parser that can tokenize XML tags for a parser
update the changelog
add a folder (_PLAYGROUND) to git ignore, to have a temporary place for
experimentation code that does not need to get checked in.
make all return types reference the same constants and allow custom non parse tags to be overloaded by parser builder.
the PEG can not have empty NON_PARSE_TAGS so remove it and make the builder include the "script"i when overwriting tags
relax jshint options so make it easier to code
clean up jslint errors
feat(XML tokenizer): Add better support for attribute

allow attribute and closing tags to have support more real-world input
add more test for attribute and closing tags
also clean up jslint errors
clean up jslint errors
add a basic tree builder