Improved readme.

README.md

 
 8x8x8 Single Color LED Cube built with an AtMega32.
 
+## Building the Software
+
+You need an AVR GCC Toolchain (eg. WinAVR) to compile both AVR firmwares. You need a C Compiler for your computer (only gcc tested, others should work) and a recent JDK with Java3D to build the PC Software, CubeControl. It should work on Windows, Mac OS X and Linux. To compile a project, just enter it's directory and run make. If you get errors compiling CubeControl, try changing the hard-coded JDK paths in the libSerial makefile, found in CubeControl/libSerial.
+
 ## Hardware
 
 This LED-Cube uses an AtMega32 for displaying animations and an AtMega8 for Audio Visualizations. I first built the Circuit on a 160x100mm hole-grid board. This was very cumbersome, so I created a dual-sided PCB Layout with SMD Parts. You can find this Layout and the Schematic in the Hardware folder, as PNGs and Eagle files. There's also a partlist.
 
-## CubeFirmware
+## Software
+
+### CubeFirmware
 
 CubeFirmware controls the AtMega32, which in turn displays images and communicates over USB. It's in the CubeFirmware folder. Compile with avr-gcc, using the makefile (just run 'make').
 
-## AudioFirmware
+### AudioFirmware
 
-This firmware controls the AtMega8, which interfaces the MSGEQ7 to get sound data. It is addressed by the CubeFirmware as a TWI-Slave.
+This firmware controls the AtMega8, which interfaces the MSGEQ7 to get sound data. It is addressed by the CubeFirmware as a TWI-Slave. Compile it like CubeFirmware.
 
-## CubeControl
+### CubeControl
 
 CubeControl is a PC software, written in Java and mostly platform-independent, to create Animations for the Cube and send them to it. It depends on [Java3D](http://www.oracle.com/technetwork/java/javase/tech/index-jsp-138252.html) to display a rotatable, clickable 3D View of the LED-Cube. It comes with it's own Serial Library to communicate with the Cube. Compile it with the makefile. You need a working javac and gcc in your Path. To compile under windows get something like [MinGW](http://www.mingw.org/) or try Microsofts compiler.
 
-## HardwareEmulator
+### HardwareEmulator
 
 Run this in a Unixoid OS to test CubeControls up-/download capabilites.
 
-## UploadTest
+### UploadTest
 
 Allows you to send test data or aniamtions saved by CubeControl to the Cube.