Deploy warfiles by name
Enable tracking of the warfile version

One way to deploy new apps is to issue a new warfile. These changes to
the module allow Puppet to automatically deploy new app versions based
on nothing but the warfile. This is achieved by seting replace=true on
the staging::file, exposed through an option to tomcat::war called
"replace".
Add symlink based deployments

This allows version-named files to be deployed once and switched back
and forth between without reaching into the guts of staging. This should
now enable pretty much any simple deployment Puppet workflow I've been able to
think of.
Update version to 0.0.3