mkdir ~/bin
     cd ~/bin
     # install phpcs and phpmd
     git clone https://github.com/squizlabs/PHP_CodeSniffer.git phpcs
     git clone git://github.com/phpmd/phpmd.git

     # install composer into your bin folder
     curl -s http://getcomposer.org/installer | php     

     # add composer, phpcs and phpmd to your path
     sudo ln -s ~/bin/phpcs/scripts/phpcs /usr/local/bin/phpcs
     sudo ln -s ~/bin/phpmd/src/bin/phpmd /usr/local/bin/phpmd
     sudo ln -s ~/bin/composer.phar /usr/local/bin/composer

     # configure phpmd
     cd ~/bin/phpmd
     composer install