feat(package.json): upgrade to through2

* also make filtering inline in the through/transform stream
* fixes through test case to through2 implementation
test(glob-stream): added pause/resume back to respect state

* changed to stream.push to queue data
* see https://github.com/rvagg/through2#transformfunction
refactor(createStream): conditionally apply filterNegatives transform fn
Merge pull request #19 from tomchentw/master

feat(package.json): upgrade to through2