Merge pull request #32 from vhbfernandes/master

added christmas tree patroling command

README.md

@@ -190,6 +190,7 @@ bb8.executeCustomCommand(filePath, {colour: '#000000'});
 * [@citypaul](http://twitter.com/paulhammond)
 * [@sud-puth](http://twitter.com/sud_)
 * [@saraford](http://twitter.com/saraford)
+* [@veaga](http://twitter.com/veaga)
 
 # Want to contribute?
 

commands/christmaspatrol.js

@@ -0,0 +1,16 @@
+var _ = require('lodash')
+module.exports = function (bb8,options) {
+    var radius = options.radius; //mm
+    var distance = 2*Math.PI*radius;
+    var colors = ["red","green"];
+    var angle_counter = 0;
+    var direction = 30;
+    return setInterval(function() {
+        bb8.roll(Math.floor(distance/12),direction*angle_counter);
+        bb8.color(_.sample(colors));
+        angle_counter++;
+        if (angle_counter>11) {
+            angle_counter = 0;
+        }
+    }, 500);
+};