Changed the way plugin are loaded: americano instance now extends all the plugins
Added: enable absolute path for plugins in config file
Fixed: give plugins the  access to the americano instance through 'this' in their initialization process
Merge branch 'master' of https://github.com/frankrousseau/americano into plugin-integration
Fixed: routes should be loaded after plugins
Merge pull request #9 from jsilvestre/plugin-integration

Plugin integration