The Compilation part (Setup) was done mostly by Minalien, I just changed it a bit. Some credit goes to BuildCraft's README.md, which I based this README off of.
2. Download the latest version of MCP from [here] (http://mcp.ocean-labs.de/index.php/MCP_Releases) , e.g. mcp723.zip. Install MCP dependencies as listed on the website if neccessary.
8. Download the latest forge source for Minecraft 1.4.5 and unzip it into `mcp` so that `mcp/forge/install.sh` exists. You need at least Forge 6.4.0.xxx, best way is to get it from [here] (http://files.minecraftforge.net/).
9. Execute `mcdev/mcp/forge/install.sh` or `mcp/forge/install.cmd`, depending on your platform. On Linux you might have to `chmod +x``install.sh` before you can execute it. On some system configurations you need to execute `install.sh` from within the forge directory whereas on others it doesn't matter. Just check the output for error messages to find out what you need to do.
3. [FOR WINDOWS] Navigate to `mcdev\source` by executing `cd [wherever your mcdev is located, just copy and paste the path in]`. (eg cd C:\Users\Username\Documents\mcdevname\source)
5. If you've done everything right AND the source code currently compiles, you can execute startclient.sh or startclient.bat inside the mcp directory now to start Minecraft with EE3.