Dev mode setting
Cassette defaults the mode to 'debug' so if anything other than 'debug' is passed in for the mode config value, it will use the production mode. Since express uses 'development' as it's env by default, this will convert 'development' to 'debug' when saving the mode config value.
Fixed index.jade template to use assets local var
…pha atm. Changed example to support Express 3.0
…restart) is in and working. Assembly .getDebugTags() now working, so in effect this code is now 'working'