bump OSRM commit sha to reflect next release
Merge pull request #62 from DennisOSRM/next_release

bump OSRM commit sha to reflect next release
bump version in package.json
bump release to go with the OSRM v0.4.2b
update readme docs on publishing a release
recommend running npm ls before publishing
Mention node-pre-gyp [publish binary]
refresh source build documentation
Merge branch 'master' of github.com:DennisOSRM/node-osrm into osx
[publish binary]