public void ProcessRequest(HttpContext context)
{
string respJson = string.Empty;
string BASE_URL = Credentials.BASE_URL;
string CLIENT_ID = Credentials.CONSUMER_KEY;
string CLIENT_SECRET = Credentials.CONSUMER_SECRET;
Util util = new Util(BASE_URL);
AccessToken token = util.GetAccessToken(CLIENT_ID, CLIENT_SECRET);
string accessToken = token.access_token;
respJson = Newtonsoft.Json.JsonConvert.SerializeObject(token);
context.Response.ContentType = "application/json";
context.Response.Write(respJson);
}