Added used software section to home page

lib/pages/home.rb

@@ -34,9 +34,43 @@ module TAC
               label "Total actions: #{actions.size}"
               label "Total variables: #{variables.size}"
             end
+
+            stack(width: 1.0, fill: true, scroll: true, margin_top: 32) do
+              heading, items = Gosu::LICENSES.split("\n\n")
+
+              title heading
+
+              items.split("\n").each do |item|
+                name, website, license, license_website = item.split(",").map(&:strip)
+                flow(width: 1.0, height: 28) do
+                  tagline "#{name} - "
+                  button "Website", height: 1.0, tip: website do
+                    open_url(website)
+                  end
+                end
+
+                flow(width: 1.0, height: 22, margin_bottom: 20) do
+                  para "#{license} - "
+                  button "License Website", height: 1.0, text_size: 16, tip: license_website do
+                    open_url(license_website)
+                  end
+                end
+              end
+            end
           end
         end
       end
+
+      def open_url(url)
+        case RUBY_PLATFORM
+        when /mingw/ # windows
+          system("start #{url}")
+        when /linux/
+          system("xdg-open #{url}")
+        when /darwin/ # macos
+          system("open #{url}")
+        end
+      end
     end
   end
 end