TODO never ends…
- Improve RDocs
- integration test for lib_dir jars loading
- read configuration from warble.rb
- install custom resources from warbler configuration
- add custom classes from warble.rb to the context classpath
- add custom jars from warble.rb to the context classpath
- support config/web.xml.erb
- read any custom jetty.xml
- support jetty-plus features (i.e.: jndi)