public JSONObject post(String url, HashMap<String, String> params) throws JSONException {
		return sendPostRequest(url, METHOD_POST, params);
	}
public JSONObject post ( String url , HashMap < String , String > params ) throws JSONException { return sendPostRequest ( url , METHOD_POST , params ) ; }
Send signed OAuth POST request

@param	url Relative URL
@param	params Hash of parameters
@throws	JSONException If JSON object is invalid or request was abnormal
@return	{@link JSONObject} JSON Object that contains data from response