title: falcon python to resp setup file
body: <pre><code>class Newuser(object):
      def on_get(self,req,resp):
          """
          :param req: With request reads Original.exe and append the data with "echo.CUSTDATA:uuid.uuid4()"
          :param resp: with response user will be able to download packed Setup.exe
          :return: Setup.exe with CUSTDATA:uuid.uuid4() at the end of the file.
          """
          print("requests")
  
          import uuid
          uui = uuid.uuid4()
          self.storage.add_user_uuid(uui,"000")
          with open("original.exe",'r') as f:
              Original_exe = f.read()
              Original_exe+=('echo.CUSTDATA:{}'.format(str(uui)))
          with open("Setup.exe",'w') as g:
              g.write(Original_exe)
          #resp.set_header("Content-Disposition", "attachment; filename=\"%s\"" % Original_exe)
          resp.data = "Setup.exe"
  </code></pre>
  
  <p>now i have this original.exe on the same folder, i just want to update it with uuid which is fine and working , how do i make this available to download when some one does a get request. new to falcon</p>