Update installation docs and minor fixes in readme (#1021)

Author: mkszepp

docs/app/components/snippets/installation-2.js.txt

@@ -0,0 +1,13 @@
+import config from './config/environment'; // this line should already be present
+import { setConfig } from 'ember-basic-dropdown/config';
+
+// Basic usage:
+setConfig({
+  rootElement: config.APP.rootElement, // Default is 'body' (or '#ember-testing' in tests)
+});
+
+// Advanced: If you need to override globally the destination element ID (BasicDropdownWormhole), you can do:
+setConfig({
+  destination: 'my-custom-destination-id',
+  rootElement: config.APP.rootElement, // Default is 'body' (or '#ember-testing' in tests)
+});

docs/app/templates/public-pages/docs/installation.gts

@@ -5,30 +5,31 @@ import { LinkTo } from '@ember/routing';
   <h1 class="doc-page-title">Installation</h1>
 
   <p>
-    Ember-basic-dropdown is distributed as an
-    <a href="https://www.ember-cli.com/">Ember CLI</a>
-    addon. To install it, run the following command in your ember project
-    directory
+    To install ember-basic-dropdown, run the following command in your ember
+    project directory
   </p>
 
   <p>
     <div class="code-block">
-      <pre>$ ember install ember-basic-dropdown</pre>
+      <pre>$ pnpm install ember-basic-dropdown</pre>
     </div>
   </p>
 
   <p>
-    When installing this through
-    <code>ember install</code>
-    the addon will add the necessary snippet above automatically in your app.
+    After the installation you need to add the following lines somewhere in your
+    <code>app.js/ts</code>.
   </p>
 
-  <h3>Manual installation</h3>
+  <CodeExample
+    @js="installation-2.js.txt"
+    @showResult={{false}}
+    @activeTab="js"
+  />
 
   <p>
-    After the installation you need to add the following lines somewhere in your
-    templates where you want to render the dropdown content into e.g. your
-    <code>application.hbs</code>. In this component will be rendered the
+    Then you need to add the following lines somewhere in your templates where
+    you want to render the dropdown content into e.g. your
+    <code>application.gjs/gts</code>. In this component will be rendered the
     dropdown content.
   </p>
 

ember-basic-dropdown/README.md

@@ -31,7 +31,7 @@ It is intended to be a building block for more complex components but is perfect
 ### Installation
 
 ```
-ember install ember-basic-dropdown
+pnpm install ember-basic-dropdown
 ```
 
 For more installation details see [documentation](https://ember-basic-dropdown.com/docs/installation)
@@ -111,12 +111,13 @@ If you'd like the dropdown to close itself after a user clicks on it, you can us
 
 ```glimmer-ts
 import BasicDropdown from 'ember-basic-dropdown/components/basic-dropdown';
+import { on } from '@ember/modifier';
 
 <template>
   <BasicDropdown as |dd|>
     <dd.Trigger>Click me!</dd.Trigger>
     <dd.Content>
-      <div {{action dd.actions.close}}>
+      <div role="button" {{on "click" dd.actions.close}}>
         {{yield dd}}
       </div>
     </dd.Content>