data.twitter.php

<?php

	require_once(EXTENSIONS . '/remote_datasource/data-sources/datasource.remote.php');

	Class datasourcetwitter extends RemoteDatasource {

		public $dsParamROOTELEMENT = 'twitter';
		public $dsParamURL = 'https://api.twitter.com/1.1/statuses/user_timeline.json?include_entities=true&include_rts=true&screen_name=ACCOUNT_NAME&count=10';
		public $dsParamFORMAT = 'json';
		public $dsParamXPATH = '/';
		public $dsParamCACHE = 30;
		public $dsParamTIMEOUT = 10; 

		public static function prepareGateway(&$ch) {
			// to generate bearer token, create and app at https://apps.twitter.com/
			// aand then go to http://twitter-bearer-token.herokuapp.com/
			$ch->setopt('HTTPHEADER',array('Content-Type: application/x-www-form-urlencoded;charset=UTF-8'));
			$ch->setopt('HTTPHEADER',array('Authorization: Bearer AAAAAAAAAAAAAAAAAAAAAIu%2FfgAAAAAAK7adp...'));
		}

		public function __construct($env=NULL, $process_params=true){
			parent::__construct($env, $process_params);
			$this->_dependencies = array();
		}

		public function about(){
			return array(
				'name' => 'Twitter',
				'author' => array(
					'name' => 'Your name',
					'website' => 'http://example.com',
					'email' => 'email@example.com'),
				'version' => 'Symphony 2.6.1',
				'release-date' => '2015-05-13T14:30:04+00:00'
			);
		}

		public function allowEditorToParse(){
			return true;
		}

	}

Bearer Tokens: see https://dev.twitter.com/oauth/application-only