Updated editor documentation

Docs/GettingStarted.dox

@@ -720,6 +720,7 @@ Left mouse         - Select nodes or drag the node transform gizmo. Hold Shift t
                      select components instead. Hold Ctrl to multiselect.
 Right mouse        - Hold down and move mouse to rotate camera
 Middle mouse       - Hold down orbits the camera around selected objects
+Shift+Right mouse   - Hold down pans the camera
 Shift+Middle mouse - Hold down pans the camera
 
 WSAD or arrows     - Move
@@ -728,6 +729,7 @@ E                  - Ascend
 Q                  - Descend
 Shift+E,Q          - Ascend or descend faster
 
+Home                 - Center view on currently selected object
 Numpad5            - Toggle orthographic / perspective camera
 Numpad1            - Front view
 Numpad3            - Right hand view
@@ -773,6 +775,15 @@ F12                - Toggle UI
 
 Press right mouse button in the 3D view if you want to defocus the active window without changing the object selection.
 
+An option in the preferences (Pan using MMB) changes the default behavior of the MMB and RMB to pan the camera, and require using Shift to use camera orbit and rotation.
+
+\verbatim
+Right mouse            -  Hold down pans the camera
+Middle mouse          -  Hold down pans the camera
+Shift+Right mouse    - Hold down and move mouse to rotate camera
+Shift+Middle mouse  - Hold down orbits the camera around selected objects
+\endverbatim
+
 \section EditorInstructions_Workflow Workflow
 
 When you start with an empty scene, set the resource path first (%File -> %Set resource path). This is the base directory, under which the subdirectories Models, Materials & Textures will be created as you import assets.