update body docs

src/body/Body.js

@@ -953,7 +953,7 @@ var Axes = require('../geometry/Axes');
  */
 
  /**
- * A `Number` specifying the angle of the body.
+ * A `Number` specifying the angle of the body, in radians.
  *
  * @property angle
  * @type number
@@ -1006,7 +1006,7 @@ var Axes = require('../geometry/Axes');
  * A `Number` that accumulates the total torque (turning force) applied to the body for a single update. See also `Body.applyForce`.
  * Torque is zeroed after every `Engine.update`, so constant torques should be applied for every update they are needed.
  *
- * Torques are converted to acceleration on every update, which depends on body inertia and the engine update delta.
+ * Torques result in angular acceleration on every update, which depends on body inertia and the engine update delta.
  * 
  * @property torque
  * @type number
@@ -1150,7 +1150,7 @@ var Axes = require('../geometry/Axes');
  */
 
  /**
- * _Read only_. Automatically calculated when vertices, mass or density are set.
+ * _Read only_. Automatically calculated when vertices, mass or density are set or set through `Body.setInertia`.
  * 
  * A `Number` that defines the moment of inertia of the body. This is the second moment of area in two dimensions.
  * 
@@ -1162,7 +1162,7 @@ var Axes = require('../geometry/Axes');
  */
 
  /**
- * _Read only_. Automatically calculated when vertices, mass or density are set.
+ * _Read only_. Automatically calculated when vertices, mass or density are set or calculated by `Body.setInertia`.
  * 
  * A `Number` that defines the inverse moment of inertia of the body (`1 / inertia`).
  * 

src/core/Engine.js

@@ -296,7 +296,7 @@ var Body = require('../body/Body');
 
  /**
  * Applies `Body.updateVelocities` to all given `bodies`.
- * @method _bodiesUpdate
+ * @method _bodiesUpdateVelocities
  * @private
  * @param {body[]} bodies
  */