Issue #3105144 by rksyravi, leopathu: Implement hook_help() and also add...

Issue #3105144 by rksyravi, leopathu: Implement hook_help() and also add README.txt or README.md file

browserclass.module

 <?php
 
+use Drupal\Core\Routing\RouteMatchInterface;
+
 /**
  * @file
  * Attaches the Browser Class JS to every page.
@@ -22,6 +24,18 @@ define('BROWSERCLASS_ALL',
   BROWSERCLASS_OTHER_CLASSES
 );
 
+/**
+ * Implements hook_help().
+ */
+function browserclass_help($route_name, RouteMatchInterface $route_match) {
+  if ($route_name == 'help.page.browserclass') {
+    // Main module help for the browserclass module.
+    $output = '';
+    $output .= '<h3>' . t('About') . '</h3>';
+    $output .= '<p>' . t('This small module helps theme-developers to deal with cross-browser compatibility. It makes easier to handle different types of non-widespread browsers just as much as it helps with using different versions of Internet Explorer.') . '</p>';
+    return $output;
+  }
+}
 
 
 /**