moved to http://www.marlinfirmware.org/

Documentation/Compilation.md

-# Configuring and compilation
-
-  1. Install the latest non-beta arduino software IDE/toolset: http://www.arduino.cc/en/Main/Software
-  2. Download the Marlin firmware
-    - [Latest developement version](https://github.com/MarlinFirmware/Marlin/tree/Development)
-    - [Stable version]()
-  3. In both cases use the "Download Zip" button on the right.
-  4. Some boards require special files and/or libraries from the ArduinoAddons directory. Take a look at the dedicated [README](/ArduinoAddons/README.md) for details.
-  5. Start the arduino IDE.
-  6. Select Tools -> Board -> Arduino Mega 2560 or your microcontroller
-  7. Select the correct serial port in Tools ->Serial Port
-  8. Open Marlin.pde or .ino
-  9. Click the Verify/Compile button
-  10. Click the Upload button. If all goes well the firmware is uploading
-
-That's ok.  Enjoy Silky Smooth Printing.