Add IE polyfill

see Shopify/dashing#310 for details

Author: Floppy

Gemfile.lock

@@ -1,8 +1,8 @@
 GIT
   remote: git://github.com/theodi/dashing.git
-  revision: 039d8f9293c8d4df19b0a343b4c22a9150d6057d
+  revision: 400977d91fcb9dc893c5b809121a5eed7dd81f80
   specs:
-    dashing (1.3.2)
+    dashing (1.3.x)
       coffee-script (~> 2.2.0)
       execjs (~> 2.0.2)
       rack (~> 1.5.2)

assets/javascripts/application.coffee

@@ -1,3 +1,7 @@
+# make sure Yaffle's eventsource goes in first
+#= require eventsource.js
+
+
 # dashing.js is located in the dashing framework
 # It includes jquery & batman for you.
 #= require dashing.js