Revert commits

README.md

 
 The Augmented Reality engine that will enchant you!
 
+:heart: encantar.js is an Augmented Reality technology which I develop independently. Support this work by [purchasing your copy](https://encantar.dev/download). You can also [become a sponsor](https://github.com/sponsors/alemart).
+
 :star2: **[Try it!](https://encantar.dev/demos/hello-aframe/poster.html)** | :video_game: **[Play a game!](https://encantar.dev/demos/basketball/poster.html)** | :magic_wand: **[Demos](https://encantar.dev/demos/)** | :heart_eyes: **[Add-Ons](https://encantar.dev/addons/)** | :books: **[Learn](https://encantar.dev/tutorial/)**
 
 <a href="https://encantar.dev/demos/hello-aframe/poster.html"><img src="docs/img/mage.gif" alt="Demo" height="144"></a> <a href="https://encantar.dev/demos/basketball/poster.html"><img src="docs/img/basketball.gif" alt="Game" height="144"></a> <a href="https://encantar.dev/addons/"><img src="docs/img/video-player.gif" alt="Video Player" height="144"></a>
 
 ## Features
 
-* **Image tracking**: track detailed images such as book covers, cartoons and photos. No need of manual training! It's also known as natural feature tracking.
+* **Image tracking**: track detailed images such as book covers, cartoons and photos. No need of manual training!
 * **Pointer tracking**: create interactive experiences based on touch and mouse input with an easy-to-use API.
 * **Plugins**: use encantar.js with the 3D framework of your choice, including: A-Frame, Babylon.js, Three.js and more!
 * **Add-Ons**: create rich experiences with additional features that enhance the core of encantar.js!
 
 ## Key points
 
-* **AR everywhere**: encantar.js runs on Android, on iOS, and even on Desktop computers! Only a modern web browser is required.
-* **Easy to use**: just load a static HTML page! No need of heavy app downloads or server-side components. Get started in a few minutes!
-* **No hosting fees**: other WebAR platforms require monthly subscriptions and have limits such as on the number of views. Save hundreds of dollars!
-* **Device-agnostic**: no need of WebXR or AR-capable devices! encantar.js is AR built from scratch with computer vision!
+* **AR everywhere**: it runs on Android, on iOS, and even on Desktop computers! Only a modern web browser is required.
+* **Easy to use**: just load a static HTML page! No need of heavy app downloads, server-side components or subscriptions.
+* **Device-agnostic**: no need of AR-capable devices! encantar.js is AR built from scratch with computer vision!
 * **Fast & powerful**: encantar.js is GPU-accelerated. It uses WebGL2 and WebAssembly for turbocharged performance.
 * **Open source**: personal, professional and educational uses are allowed.
 

docs/home.md

 #gallery img { height: 128px; margin: 0 2px; }
 </style>
 
+:heart:{ .heart } encantar.js is an Augmented Reality technology which I develop independently. Support this work by [purchasing your copy](./download.md). You can also [become a sponsor](https://github.com/sponsors/alemart).
+
 [:star2: Try it!](../demos/hello-aframe/poster.html){ .md-button ._blank } [:video_game: Play a game!](../demos/basketball/poster.html){ .md-button ._blank } [:sparkles: Demos](./demos.md){ .md-button } [:heart_eyes: Add-Ons](./addons/index.md){ .md-button } [:books: Learn](./tutorial/index.md){ .md-button }
 
 <div id="gallery">
 
 ## Features
 
-* **Image tracking**: track detailed images such as book covers, cartoons and photos. No need of manual training! It's also known as natural feature tracking.
+* **Image tracking**: track detailed images such as book covers, cartoons and photos. No need of manual training!
 * **Pointer tracking**: create interactive experiences based on touch and mouse input with an easy-to-use API.
 * **Plugins**: use encantar.js with the 3D framework of your choice, including: A-Frame, Babylon.js, Three.js and more!
 * **Add-Ons**: create rich experiences with additional features that enhance the core of encantar.js!
 
 ## Key points
 
-* **AR everywhere**: encantar.js runs on Android, on iOS, and even on Desktop computers! Only a modern web browser is required.
-* **Easy to use**: just load a static HTML page! No need of heavy app downloads or server-side components. Get started in a few minutes!
-* **No hosting fees**: other WebAR platforms require monthly subscriptions and have limits such as on the number of views. Save hundreds of dollars!
-* **Device-agnostic**: no need of WebXR or AR-capable devices! encantar.js is AR built from scratch with computer vision!
+* **AR everywhere**: it runs on Android, on iOS, and even on Desktop computers! Only a modern web browser is required.
+* **Easy to use**: just load a static HTML page! No need of heavy app downloads, server-side components or subscriptions.
+* **Device-agnostic**: no need of AR-capable devices! encantar.js is AR built from scratch with computer vision!
 * **Fast & powerful**: encantar.js is GPU-accelerated. It uses WebGL2 and WebAssembly for turbocharged performance.
 * **Open source**: personal, professional and educational uses are allowed.