Add time_ago helper method

Author: mateusdeap

app/helpers/puzzles_helper.rb

@@ -1,2 +1,5 @@
 module PuzzlesHelper
+  def time_ago(past_time)
+    "#{time_ago_in_words(past_time)} ago"
+  end
 end

app/views/puzzles/_puzzles_table.html.erb

@@ -24,7 +24,7 @@
           <% end %>
         </td>
         <% if actions == :archived %>
-          <td><%= time_ago_in_words(puzzle.sent_at) %> ago</td>
+          <td><%= time_ago(puzzle.sent_at) %></td>
         <% end %>
         <td>
           <% if actions == :pending %>