var form_data={
		"username": $('#username').val(),
		"password": $('#password').val(),
	}
		
	$.post({
		url: server_url + "auth/signin",
	 	contentType: "application/json",
		data : JSON.stringify(form_data),
		success : function(response) {
			console.log("Calling",response);
		},
        error: function (error) {
	 		console.log(error);
	}
});