auto-install nvm, node.js

install.sh

#!/bin/bash
NODE="v0.4.11"
NVMDIR=~/.nvm
NVM=~/.nvm/nvm.sh

echo "installing projectman-repl"
hash nvm 2>&- || { 
    echo "couldn't find nvm, sourcing from $NVM"
    test -e $NVM || {
        echo "couldn't find $NVM -> installing..."
        hash git 2>&- || {
            echo "couldn't find git -> installing..."
            sudo apt-get -y install git-core
        }
        git clone git://github.com/creationix/nvm.git $NVMDIR
    }
    . $NVM
}
test -e $NVMDIR/$NODE || {
    echo "cound't find $NVMDIR/$NODE -> installing..."
    sudo apt-get -y install g++ curl libssl-dev apache2-utils
    nvm install $NODE
}