readme update

readme.md

@@ -1,18 +1,15 @@
 #ofxGrabCam
 
-"this is basically the best thing ever." - kyle mcdonald
-
 Camera for browsing your scene. It 'picks' the xyz position under the cursor (using the depth buffer to get Z).
-Rotations and zoom are then performed with respect to that xyz position
+Rotations and zoom are then performed with respect to that xyz position.
+Rotations are performed using a trackball model.
 Inspired by Google SketchUp (http://sketchup.google.com/)
 
-Name suggestions welcome!
-
 Elliot Woods
 http://www.kimchiandchips.com
 
 #Controls
-##ofxGrabCam
+##ofxGrabCam (general)
 Left click drag = rotate
 
 Right click drag = zoom
@@ -30,3 +27,5 @@ hold 'h' whilst left click drag = pan
 MIT License
 http://en.wikipedia.org/wiki/MIT_License
 
+#Testimonials
+"this is basically the best thing ever." - kyle mcdonald