Add WebServiceRequest Class

# v.03
* Added ability to post JSON strings back to specified web service.
* Class WebServiceRequest added to handle posting the JSON strings
* Class WebServiceRequest contains public static final (constant
strings) that conant the URL addresses for our services
* Address <Uses> tag to manifest to allow internet access to all
devices.

References:
*
http://stackoverflow.com/questions/6118768/posting-a-json-to-a-restful-webservice-getting-the-http-200-ok-but-it-returns
*
http://developer.android.com/reference/org/apache/http/client/methods/HttpPost.html
*
http://developer.android.com/reference/org/apache/http/client/HttpClient.html
*
http://developer.android.com/reference/org/apache/http/HttpResponse.html