removed testling badge
Merge pull request #8 from dominictarr/master

support sublevel and plugin extensions
release 3.0.0
docs
docs
Merge pull request #11 from dominictarr/master

add `close()` (and `isClosed()` and `isOpen()`)
release 3.1.0
use msgpack to enable binary data
better benchmark suite
documented benchmark
updated msgpack-stream to use msgpack-browserify
update deps
use dependency injection pattern to support buffers with binary or text