Merge pull request #3 from satazor/master

Rethrow error
Update deps
Remove tmpdir fallback
Use the package.json files prop
0.1.2
Switch to js-yaml and improve error handling

Switching to it since it's much more popular, faster and safer.

Also only allow JSON types.
Attempt at fixing yeoman/update-notifier#13
Bumped dependencies
Fallback to temp if home is not set.