Registered Module Loaders denote a priority, such that if a higher-priority module loader fails to find a module with a given specifier, it attempts to load from the lower-priority loader
1) checks the webresource for a 'super-man.js' resource module
2) checks the github module loader for a 'repository/super-man.js' resource module
3) checks the assembly module loader for a 'super-man' module
Similar to the AggregateModuleLoader except that
e.g. loader0 - webresource moduleloader loader1 - github moduleloader loader2 - assembly moduleloader
1) checks the webresource for a 'super-man.js' resource module 2) checks the github module loader for a 'repository/super-man.js' resource module 3) checks the assembly module loader for a 'super-man' module