bump to v0.5.1
hackish attempt to support 'official' renamed node packages on debian systems
add windows cmd wrapper
fix test.bat typo
sh compatible boolean check
Merge pull request #45 from mapbox/ubuntu-nodejs-bin

shebang magic
update changelog for v0.5.2
bump to v0.5.2
rollback debian fix / unbreak windows
actually bump to v0.5.3
add more details about overriding package_name
Add runtime option to docs
match https://github.com/TooTallNate/node-gyp/commit/e82e4387bed35cc59d61a6433dc23d9caf0bdc01
new keys
add instructions for recommended S3 IAM user setup
dynamically determine path to node-gyp inside node/npm install - refs #24
also stop setting up node-gyp in windows test
Merge pull request #48 from mapbox/find-node-gyp

Find node-gyp path
bump to v0.5.4
simplify `return callback()` alternative

The value of `shell_cmd` is set in every of the above alternatives, and thus a simple `else` would suffice here.