Added TeamMembers.js file

app/assets/javascripts/dispatcher.js.coffee

@@ -30,6 +30,8 @@ class Dispatcher
         new Project()
       when 'walls:show'
         new Wall(project_id)
+      when 'teams:members:index'
+        new TeamMembers()
 
     switch path.first()
       when 'admin' then new Admin()

app/assets/javascripts/team_members.js.coffee

@@ -0,0 +1,6 @@
+class TeamMembers
+  constructor: ->
+    $('.team-members .project-access-select').on "change", ->
+      $(this.form).submit()
+
+@TeamMembers = TeamMembers