Updating this nice library to be compatible with node-gyp.

- Added a proper binding.gyp file to build with node-gyp
- Updated package.json to support the changes too.
- Added the bindings module, plus lib/index.js for nice inclusion.
Merge pull request #39 from IngwiePhoenix/master

Updating this nice library to be compatible with more modern node, and node-gyp
Update package.json

npm publish is protesting: it wants a different version number
Merge pull request #42 from xk/patch-1

Update package.json
Update AUTHORS

2014-02-27 IngwiePhoenix <ingwie2000@googlemail.com>
Update package.json

Must give credit where it's due.
Fix main path in package.json to match node-gyp documentation.

According to https://github.com/TooTallNate/node-gyp, the built
.node file is placed into build/Release, not build/release.  This
is a non-issue on case-insensitive file systems, but breaks this
lib on case-sensitive file systems.