check package.json before making any pull requests

[AndreasMadsen]

In my case I just got approximately 8 pull requests, there breaks backward compatibility.

Could you please modify the bot so it check package.json first. If the JSON file specify indicate that node 0.8 is supported with "engines": { "node": "0.6 || 0.8" } then just skip the module.

Trust the author.

[blakmatrix]

Awesome advice, I'll keep it in mind if I try another migration with it, might put in a helper command too for folks that might want to run it on their own, thanks!