text: var Synapse = require('..')();
  var node1 = new Synapse({
    name: 'node1'
  });
  node1.expose({
    sum: function (a, b, cb) {
      cb(null, a + b);
    },
    sub: function (a, b, cb) {
      cb(null, a - b);
    }
  });
  node1.start(function () {
    console.log('node1 is ready');
  });