Instalando EventMachine no Windows 7 x64 executando com Ruby 2.0 64

patch de sroller

git clone https://github.com/sroller/eventmachine.git

entrar dir

cd eventmachine

instalar compilador

gem install rake-compiler

construir joia

rake native gem

instale-o

gem install --local pkgeventmachine-1.0.1-x64-mingw32.gem