LoadModule passenger_module /usr/local/rvm/gems/ruby-1.9.3-p547/gems/passenger-4.0.45/buildout/apache2/mod_passenger.so
 <IfModule mod_passenger.c>
   PassengerRoot /usr/local/rvm/gems/ruby-1.9.3-p547/gems/passenger-4.0.45
   PassengerDefaultRuby /usr/local/rvm/gems/ruby-1.9.3-p547/wrappers/ruby
</IfModule>