Adds package.json

[nbgraham]

Allows the plugin to be added to a cordova project

I couldn't figure out how to install the plugin https://github.com/ti8m/DocumentHandler/issues/24.

I was able to add the plugin by following the Plugin Development Guide to create a package.json.

If you clone the repo with the package.json, you can add the plugin to your project with cordova plugin add <path_to_local_repo>

I would recommend adding a license to the plugin and publishing it to npm.