[COOK-2293] Reload attributes

Signed-off-by: Seth Vargo <sethvargo@gmail.com>
Update CHANGELOG format
Fix README format
Version bump to v2.0.4
Bump devodd release
[COOK-3395] Make sure to compile the version of passenger on the node attrribute

Signed-off-by: Seth Vargo <sethvargo@gmail.com>
[COOK-3486] make PassengerRuby configurable via attribute

This change allows to configure the ruby executable passed to the
PassengerRuby directive. This is useful if you need a ruby wrapper
script to set environment variables like RUBYOPT etc.
[COOK-3486] document ruby_bin attribute