THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
...
cd /Library/WebServer/Documents
git clone https://github.com/apache/airavata-php-gateway.git
cd /Library/WebServer/Documents/airavata-php-gateway
sudo chmod -R 755 app/storage
sudo vim /etc/apache2/httpd.conf
uncomment #LoadModule rewrite_module libexec/apache2/mod_rewrite.so
uncomment #LoadModule php5_module libexec/apache2/libphp5.so
sudo composer install
sudo apachectl restart