Added jsdocs

Author: photonstorm

src/physics/matter-js/components/Sensor.js

@@ -5,20 +5,21 @@
  */
 
 /**
- * [description]
+ * Enables a Matter-enabled Game Object to be a sensor. Should be used as a mixin and not directly.
  *
  * @namespace Phaser.Physics.Matter.Components.Sensor
  * @since 3.0.0
  */
 var Sensor = {
 
     /**
-     * [description]
+     * Set the body belonging to this Game Object to be a sensor.
+     * Sensors trigger collision events, but don't react with colliding body physically.
      *
      * @method Phaser.Physics.Matter.Components.Sensor#setSensor
      * @since 3.0.0
      *
-     * @param {boolean} value - [description]
+     * @param {boolean} value - `true` to set the body as a sensor, or `false` to disable it.
      *
      * @return {Phaser.GameObjects.GameObject} This Game Object.
      */
@@ -30,12 +31,12 @@ var Sensor = {
     },
 
     /**
-     * [description]
+     * Is the body belonging to this Game Object a sensor or not?
      *
      * @method Phaser.Physics.Matter.Components.Sensor#isSensor
      * @since 3.0.0
      *
-     * @return {boolean} [description]
+     * @return {boolean} `true` if the body is a sensor, otherwise `false`.
      */
     isSensor: function ()
     {