Adding Distimo SDK for BlackBerry 10 plugin

This pull request contains:
1. sample app
2. plugin.xml of the plugin
3. client.js of the plugin

Files 2 and 3 will eventually have to be merged with the corresponding files in this [repository](https://github.com/distimo/DistimoSDK-PhoneGap-Plugin). I did not merge them yet because for further development, you will have to have files 2 and three anyways.

The source file of the plugin is located [here](https://github.com/bh2yoon/DistimoSDK-PhoneGap-Plugin).