add support for World, works like it does in cucumber

lib/assets/javascripts/jasmine/GWT.js.coffee

@@ -5,13 +5,25 @@ jasmine.GWT =
     else
       jasmine.GWT.Steps[type] ||= []
       jasmine.GWT.Steps[type].push([ name, parameter ])
+
   Hook: (type, code) ->
     jasmine.GWT.Hooks[type] ||= []
     jasmine.GWT.Hooks[type].push(code)
 
+  World: (object_or_code) ->
+    if typeof object_or_code != 'function'
+      object_or_code = jasmine.GWT._generateWorldMethods(object_or_code)
+
+    jasmine.GWT.Hook('World', object_or_code)
+
   runHook: (type, context) ->
     for code in (jasmine.GWT.Hooks[type] || [])
       code.apply(context)
 
+  _generateWorldMethods: (object) ->
+    ->
+      for method, code of object
+        this[method] = code
+
   Steps: {}
   Hooks: {}

lib/assets/javascripts/jasmine/GWT/Scenario.js.coffee

@@ -23,6 +23,7 @@ class jasmine.GWT.Scenario extends jasmine.GWT.Background
 
             it "#{type} #{name}", ->
               if isFirst
+                jasmine.GWT.runHook('World', _this)
                 jasmine.GWT.runHook('Before', _this)
 
               this.spyOn = (args...) ->

lib/assets/javascripts/jasmine/GWT/globals.js.coffee

@@ -26,3 +26,5 @@ jasmine.GWT.globals =
   Before: (args...) -> jasmine.GWT.Hook('Before', args...)
   After: (args...) -> jasmine.GWT.Hook('After', args...)
 
+  World: (args...) -> jasmine.GWT.World(args...)
+