Removed writing to stream (#3)

* Removed writing to stream

Fixes #2 I hope, removed the writing of a comment. It was a small security issue aswell

* Easy on the queries

We dont want to hit the db every request

lib/workless/middleware/workless_checker.rb

@@ -7,14 +7,9 @@ def call(env)
     status, headers, response = @app.call(env)
     return [status, headers, response] if file?(headers) || empty?(response)
 
-    Delayed::Job.scaler.up if Delayed::Job.scaler.jobs.size > 0
-    response_body = nil
-    if status == 200 && !response.body.frozen? && html_request?(headers, response)
-      response_body = response.body << "\n<!-- workless jobs: #{Delayed::Job.scaler.jobs.size} -->"
-      headers['Content-Length'] = response_body.bytesize.to_s
-    end
+    Delayed::Job.scaler.up unless Delayed::Job.scaler.jobs.empty?
 
-    [status, headers, response_body ? [response_body] : response]
+    [status, headers, response]
   end
 
   # fix issue if response's body is a Proc
@@ -30,8 +25,4 @@ def empty?(response)
   def file?(headers)
     headers['Content-Transfer-Encoding'] == 'binary'
   end
-
-  def html_request?(headers, response)
-    headers['Content-Type'] && headers['Content-Type'].include?('text/html') && response.body.include?('<html')
-  end
 end