Revert "Merge pull request #6 from ulken/blacklist"

This reverts commit 9572d9438205860dc654b8491cc88af70af031fa, reversing
changes made to 388ef208779377a23aa5dee7ebb453150d5b1906.

Currently the changes are not ready for release since specs are failing.
Fix error "Uncaught RangeError" with Atom 0.162

The Config::observe no longer honors the callNow option
in favor of::onDidChange.

* https://github.com/atom/atom/issues/3674
* https://github.com/atom/atom/commit/b0731afd4ce32c6e23d518000866f2c65aad1207

This fixes #10.
Prepare 0.2.2 release