fix example
remove most lodash usage

not necessary
Merge pull request #17 from LearnBoost/remove/lodash

remove most lodash usage and fix examples.
add archiver(type) support
few touchups after last merge.
removal of lodash dependency.
add benchmark pack-zip-simple
Merge pull request #19 from LearnBoost/refactor

add archiver(type) support.
Merge pull request #20 from danmilon/feature-benchmarks

add benchmark pack-zip-simple.
touchups after last merge.
update CHANGELOG.
first go at cleaning up examples.
test: add tests with multiple append. currently failing.
test: add hash for tar multiple.
test: add detailed tests on zip store. cleanup zip.
test: tweak tar tests.
use this where possible. use bind for error emitter callback.
core: bind finalize callback to this.
bench: use 10mb file by default.
zip: switch to old method of deflate. all tests should pass.