Make $.fn.document always take event name / doc string args

It's simpler and we don't use the other syntax right now.

spec/stdlib/jquery-extensions-spec.coffee

@@ -42,7 +42,7 @@ describe 'jQuery extensions', ->
         element.trigger 'foo'
         expect(events).toEqual [2,1,3]
 
-  describe "$.fn.events() and $.fn.document", ->
+  describe "$.fn.events() and $.fn.document(...)", ->
     it "returns a list of all events being listened for on the target node or its ancestors, along with their documentation string", ->
       view = $$ ->
         @div id: 'a', =>
@@ -50,20 +50,18 @@ describe 'jQuery extensions', ->
             @div id: 'c'
           @div id: 'd'
 
-      view.document
-        'a1': "This is event A2"
-        'b2': "This is event b2"
+      view.document 'a1', "This is event A2"
+      view.document 'b2', "This is event b2"
 
-      view.document 'a1': "A1: Waste perfectly-good steak"
+      view.document 'a1', "A1: Waste perfectly-good steak"
       view.on 'a1', ->
       view.on 'a2', ->
       view.on 'b1', -> # should not appear as a duplicate
 
       divB = view.find('#b')
 
-      divB.document
-        'b1': "B1: Super-sonic bomber"
-        'b2': "B2: Looks evil. Kinda is."
+      divB.document 'b1', "B1: Super-sonic bomber"
+      divB.document 'b2', "B2: Looks evil. Kinda is."
       divB.on 'b1', ->
       divB.on 'b2', ->
 

src/stdlib/jquery-extensions.coffee

@@ -59,12 +59,9 @@ $.fn.trueHeight = ->
 $.fn.trueWidth = ->
   this[0].getBoundingClientRect().width
 
-$.fn.document = (eventDescriptions, optionalDoc) ->
-  if optionalDoc
-    eventName = eventDescriptions
-    eventDescriptions = {}
-    eventDescriptions[eventName] = optionalDoc
-
+$.fn.document = (eventName, docString) ->
+  eventDescriptions = {}
+  eventDescriptions[eventName] = docString
   @data('documentation', {}) unless @data('documentation')
   _.extend(@data('documentation'), eventDescriptions)