Ask about wheel distribution too, fixes #4793

Code not tested and I'm not sure how this class works or how it writes to the `.travis.yml` file. Just trying to get the ball rolling

lib/travis/cli/setup/pypi.rb

@@ -12,6 +12,8 @@ def run
             config['password'] ||= ask("Password: ") { |q| q.echo = "*" }.to_s
 
             on("release only tagged commits? ", config, 'tags' => true)
+            # the default of pypi `setup.py build` is the `sdist`
+            on("deploy as wheel file too? ", config, 'distributions' => 'sdist bdist_wheel')
           end
         end
       end