Revert "Hide the /uptime endpoint in the docs."

This reverts commit 477f39a000.

lib/travis/api/app/endpoint/documentation.rb

@@ -132,7 +132,6 @@ __END__
               <h2><a href="#<%= endpoint['name'] %>"><%= endpoint['name'] %></a></h2>
               <ul>
               <% endpoint['routes'].each  do |route| %>
-                <% next  if route['scope'] == 'hidden' %>
                 <li>
                   <a href="#<%= slug_for(route) %>">
                     <i class="icon-<%= icon_for route['verb'] %>"></i>
@@ -190,7 +189,6 @@ __END__
   <%= docs_for endpoint %>
 <% end  %>
 <% endpoint['routes'].each  do |route| %>
-  <% next  if route['scope'] == 'hidden' %>
   <div class="route" id="<%= slug_for(route) %>">
     <h3><%= route['verb'] %> <%= route['uri'] %></h3>
     <% if  route['scope'] %>

lib/travis/api/app/endpoint/uptime.rb

@@ -3,7 +3,7 @@ require 'travis/api/app'
 class Travis::Api::App
   class Endpoint
     class Uptime < Endpoint
-      get '/', scope: :hidden do
+      get '/' do
         begin
           ActiveRecord::Base.connection.execute('select 1')
           [200, "OK"]