Add imperative example of Conway's game

examples/conway_sphero_imperative/conway_sphero_imperative.js

@@ -0,0 +1,85 @@
+var Cylon = require("../..");
+
+var Green = 0x0000FF,
+    Red = 0xFF0000;
+
+var bots = {
+  'Thelma': '/dev/rfcomm0',
+  'Louise': '/dev/rfcomm1',
+  'Grace':  '/dev/rfcomm2',
+  'Ada':    '/dev/rfcomm3'
+};
+
+Object.keys(bots).forEach(function(name) {
+  var port = bots[name];
+
+  var robot = Cylon.robot({
+    name: name,
+    connection: { name: 'sphero', adaptor: 'sphero', port: port },
+    device: { name: 'sphero', driver: 'sphero' }
+  });
+
+  robot.move = function() {
+    this.sphero.roll(60, Math.floor(Math.random() * 360));
+  };
+
+  robot.born = function() {
+    this.contacts = 0;
+    this.age = 0;
+    this.life();
+    this.move();
+  };
+
+  robot.life = function() {
+    this.alive = true;
+    this.sphero.setRGB(Green);
+  };
+
+  robot.death = function() {
+    this.alive = false;
+    this.sphero.setRGB(Red);
+    this.sphero.stop();
+  };
+
+  robot.enoughContacts = function() {
+    return this.contacts >= 2 && this.contacts < 7;
+  };
+
+  robot.birthday = function() {
+    this.age += 1;
+
+    if (this.alive) {
+      console.log("Happy birthday, " + this.name + ". You are " + this.age + " and had " + this.contacts + " contacts.");
+    }
+
+    if (this.enoughContacts()) {
+      if (!this.alive) {
+        this.born();
+      }
+    } else {
+      this.death();
+    }
+
+    this.contacts = 0;
+  };
+
+  robot.on('ready', function(my) {
+    my.born();
+
+    my.sphero.on('collision', function() {
+      my.contacts += 1;
+    });
+
+    every((3).seconds(), function() {
+      if (my.alive) {
+        my.move();
+      }
+    });
+
+    every((10).seconds(), function() {
+      my.birthday();
+    });
+  });
+});
+
+Cylon.start();