create and override of default template

[Ray Camden]

According to 
(http://cordova.apache.org/blog/releases/2013/10/02/cordova-31.html), you
can now override the default template when creating a project. From what I
can see this isn't documented when I run cordova at the command line.
Should I file a bug report for that? Also, I assume the command line help
will be pretty simple, ie, use override="folder" to use the feature, but
what will be required in the custom template folder? (If anything.)