Updated servo examples to include the new optional range param.

examples/servo/servo.coffee

@@ -1,8 +1,15 @@
 Cylon = require '../..'
 
 Cylon.robot
-  connection: { name: 'arduino', adaptor: 'firmata', port: '/dev/ttyACM0' }
-  device: { name: 'servo', driver: 'servo', pin: 3 }
+  connection:
+    name: 'arduino', adaptor: 'firmata', port: '/dev/ttyACM0'
+
+  # when declaring the servo driver you can add an optional range param
+  # (defaults to min: 30 max 150). This param sets limits for the angle,
+  # so sot he servo can't be damaged if it cannot move in the full 0-180
+  # range, most servos are not capable of this.
+  device:
+    name: 'servo', driver: 'servo', pin: 3, range: { min: 30, max: 150}
 
   work: (my) ->
     angle = 30

examples/servo/servo.js

@@ -2,7 +2,7 @@ var Cylon = require('../..');
 
 Cylon.robot({
   connection: { name: 'arduino', adaptor: 'firmata', port: '/dev/ttyACM0' },
-  device: { name: 'servo', driver: 'servo', pin: 3 },
+  device: { name: 'servo', driver: 'servo', pin: 3, range: { min: 30, max: 150 } },
 
   work: function(my) {
     var angle = 30;

examples/servo/servo.litcoffee

@@ -15,10 +15,16 @@ Now we can start defining our robot:
     Cylon.robot
 
 We'll be connecting to an Ardunio, using the Firmata protocol, and a servo
-attached to the Arduino on pin 3.
+attached to the Arduino on pin 3. We have the option to pass an extra 'range'
+param to the device, this param sets the min and max angle values. By default
+this is set to min: 30, max: 150 to prevent damaging the servo when giving it
+an angle outside the range it can cover.
 
-      connection: { name: 'arduino', adaptor: 'firmata', port: '/dev/ttyACM0' }
-      device: { name: 'servo', driver: 'servo', pin: 3 }
+      connection:
+        name: 'arduino', adaptor: 'firmata', port: '/dev/ttyACM0'
+
+      device:
+        name: 'servo', driver: 'servo', pin: 3, range: { low: 30, high: 150}
 
 We'll start defining the work for our robot next: