Update texts

README.md

 
 [![WebAR demo](https://alemart.github.io/martins-js/demo/reference-image-with-qr-code.webp)](https://alemart.github.io/martins-js/demo/)
 
-Other demos available [here](https://alemart.github.io/martins-js/gallery/).
+Visit the [Demo gallery](https://alemart.github.io/martins-js/gallery/) for more.
 
 ## Try locally
 
 2. Open https://localhost:8000/demos/
 3. Pick a demo and have fun!
 
+## Features
+
+* **Image tracking**, also known as natural feature tracking. Use it to track detailed images such as: book covers, cartoons and photos.
+
 ## What can you do with Web-based Augmented Reality?
 
 Lots of exciting things that run in the web browser! No need to install apps!
 
+* WebAR games
 * Marketing gimmicks
-* WebAR Games
 * Interactive art
 * Tech demos
 * ...and more!
 * **Fully standalone!** MARTINS.js has in it everything it needs to analyze the environment and help you create AR. There are no additional requirements. No need of WebXR.
 * **Easy to get started!** MARTINS.js can be used with a `<script>` tag in your page. A static HTML page is enough to get started.
 
-## Features
-
-Currently supported features:
-
-* **Image tracking**, also known as natural feature tracking. Use it to track detailed images such as: book covers, cartoons and photos.
-
 ## Browser compatibility
 
 MARTINS.js is compatible with the latest versions of almost all major web browsers:

docs/gallery.md

 <div class="gallery-item" markdown>
 [![QR code](./img/qr-demo-hello-aframe.gif)](/martins-js/demos/hello-aframe){ ._blank }
 
-**MARTINS.js + AFRAME**
+**MARTINS.js with AFRAME**
 
 [Launch demo](/martins-js/demos/hello-aframe){ ._blank } | [View the code](https://github.com/alemart/martins-js/tree/master/demos/hello-aframe){ ._blank }
 </div>
 <div class="gallery-item" markdown>
 [![QR code](./img/qr-demo-hello-three.gif)](/martins-js/demos/hello-three){ ._blank }
 
-**MARTINS.js + THREE.js**
+**MARTINS.js with THREE.js**
 
 [Launch demo](/martins-js/demos/hello-three){ ._blank } | [View the code](https://github.com/alemart/martins-js/tree/master/demos/hello-three){ ._blank }
 </div>
 <div class="gallery-item" markdown>
 [![QR code](./img/qr-demo-hello-webgl.gif)](/martins-js/demos/hello-webgl){ ._blank }
 
-**MARTINS.js + pure WebGL**
+**MARTINS.js with pure WebGL**
 
 [Launch demo](/martins-js/demos/hello-webgl){ ._blank } | [View the code](https://github.com/alemart/martins-js/tree/master/demos/hello-webgl){ ._blank }
 </div>
 <div class="gallery-item" markdown>
 [![QR code](./img/qr-demo-hello-world.gif)](/martins-js/demos/hello-world){ ._blank }
 
-**Hello, world!**
+**Hello, World!**
 
 [Launch demo](/martins-js/demos/hello-world){ ._blank } | [View the code](https://github.com/alemart/martins-js/tree/master/demos/hello-world){ ._blank }
 </div>

docs/getting-started/index.md

 
 :books: Technical documentation is available at <https://alemart.github.io/martins-js/>.
 
+## Features
+
+* **Image tracking**, also known as natural feature tracking. Use it to track detailed images such as: book covers, cartoons and photos.
+
 ## What can you do with Web-based Augmented Reality?
 
 Lots of exciting things that run in the web browser! No need to install apps!
 
+* WebAR games
 * Marketing gimmicks
-* WebAR Games
 * Interactive art
 * Tech demos
 * ...and more!
 
-[WebAR Crash Course](./introduction.md){ .md-button .md-button--primary } [Demo gallery](../gallery.md){ .md-button }
+[Visit the Demo gallery](../gallery.md){ .md-button .md-button--primary }
 
 ## Why use MARTINS.js?
 
 * **Fully standalone!** MARTINS.js has in it everything it needs to analyze the environment and help you create AR. There are no additional requirements. No need of WebXR.
 * **Easy to get started!** MARTINS.js can be used with a `<script>` tag in your page. A static HTML page is enough to get started.
 
-## Features
-
-Currently supported features:
-
-* **Image tracking**, also known as natural feature tracking. Use it to track detailed images such as: book covers, cartoons and photos.
+[Take the Crash Course](./introduction.md){ .md-button .md-button--primary }
 
 ## Browser compatibility