app/views/my_timeline/github/_control_panel.html.erb
<h3> Github Settings </h3>
<% if @user.settings(:github).user_name %>
<%= button_to "Scrape activities from #{@user.settings(:github).user_name}!", github_scrape_path, method: :get, class: "btn btn-primary" %>
<% else %>
<%= form_tag new_github_path, method: :post do %>
<%= label_tag :user_name %>
<%= text_field_tag :user_name %>
<br>
<%= submit_tag "Save username", class: "btn btn-primary" %>
<% end %>
<% end %>