doc: Readme updated

Readme.md

@@ -8,15 +8,15 @@ A material editor which allows interactive manipulating materials of objects in
 Both programs use the [3D plush library](/plush/pl_api.html) which was formerly located [here](http://www.nullsoft.com/free/plush/). For the GUI, I used the [Depui](/depui/homepage/depui.htm) library. The graphics library is [GRX](/contrib/grx248/doc/grx248um.html).
 
 # History
-I started working on this project in 2002, so the graphics are outdated by today's standards. The original target platform was DJGPP DOS. Later I switched to Windows as main target platform. Linux is still under construction. In the meantime, I haven't worked on the project for a long time. Anyway, I want to finally finish the project, achieve the goals of the time and practice C++ by the way.
+I started working on this project in 2002, so the graphics might be outdated by today's standards. The original target platform was DJGPP DOS. Later I switched to Windows as main target platform. Linux versions are also available. In the meantime, I haven't worked on the project for a long time. Anyway, I have now finally finished the project, achieved the goals of the time and practiced C++ by the way.
 
 
 # Usage
-These two programs run under Windows.
+These two programs run under Windows and Linux.
 To start, use
 
-- `PlushPlayer.exe` or
-- `Matedit2.exe`
+- `PlushPlayer.exe` / `PlushPlayer` or
+- `MatEdit.exe` / `MatEdit`
 
 
 ## PlushPlayer
@@ -26,13 +26,20 @@ You can load any *.scx (Scene XML) file from the "scenes" folder.
 When you start PlushPlayer, it shows a file open dialog to select a scene file.
 
 In the scene, you can navigate using the mouse and the following keys:
--  w - step forward
-- a - step left
-- s - step backward
-- d - step right
-- r - reload a previously loaded scene
-- F1 - popup the key help window
-- F3 - popup the file open dialog.
+|Key        | Description           |
+|-----------|-----------------------|
+| `<Esc>`   | ingame menu           |
+| w         | move forward          |
+| a         | move left             |
+| s         | move backward         |
+| d         | move right            |
+| r         | reload scene          |
+| q         | quit                  |
+| `<space>` | play/pause            |
+| F1        | Key Help              |
+| F3        | Load Scene File       |
+| F9        | Set move mode to walk |
+| F10       | Set move mode to fly  |
 
 ## Matedit
 ![Matedit with standard.scx](/assets/img/1.jpeg)