Save if user prefers readme or activity tab.

app/assets/javascripts/project.js.coffee

@@ -51,3 +51,12 @@ $ ->
     $(@).toggleClass('on').find('.count').html(data.star_count)
   .on 'ajax:error', (e, xhr, status, error) ->
     new Flash('Star toggle failed. Try again later.', 'alert')
+
+  $("a[data-toggle='tab']").on "shown.bs.tab", (e) ->
+      $.cookie "default_view", $(e.target).attr("href")
+
+    defaultView = $.cookie("default_view")
+    if defaultView
+      $("a[href=" + defaultView + "]").tab "show"
+    else
+      $("a[data-toggle='tab']:first").tab "show"