lib/hummingbird.js
function(service, credentials) {
    Services.load(service);
    process.nextTick(function() {
      Services.boot(service, credentials);
    }.bind(this));
  }
function(service, credentials) {
    Services.load(service);
    process.nextTick(function() {
      Services.boot(service, credentials);
    }.bind(this));
  }
function ( service , credentials ) { Services . load ( service ) ; process . nextTick ( function ( ) { Services . boot ( service , credentials ) ; } . bind ( this ) ) ; }
Add a service to be streamed

@param {string} service     - identifier of service, 'twitter', 'instagram', etc.
@param {object} credentials - API credentials for the service
Add a service to be streamed