Set the encoding to utf8 otherwise opal source won’t get correctly parsed

zetachang · zetachang · commit 781150458cdd · 2016-10-29T21:26:03.000+08:00
diff --git a/spec/index.html.erb b/spec/index.html.erb
@@ -1,6 +1,7 @@
 <!DOCTYPE html>
 <html>
 <head>
+  <meta charset="UTF-8" />
 </head>
 <body>
   <%= javascript_include_tag 'vendor/es5-shim.min' %>
