Update markdown parsing to allow wiki links

Any link inside a item detail page's markdown description which does
not have a URL will be assumed to be the name of an item covered by
Crafting Guide and an URL will be added to reference the appropiate
browse page.

src/coffee/main.coffee

@@ -32,9 +32,10 @@ switch window.location.hostname
         global.env = 'production'
         logger.level = Logger.INFO
 
-global.router = new CraftingGuideRouter
-global.util   = require 'util'
-global.views  = views
+global.router   = new CraftingGuideRouter
+global.util     = require 'util'
+global.views    = views
+global.markdown = global.markdown.markdown
 
 global.feedbackController = new FeedbackController el:'.view__feedback'
 feedbackController.render()