update mobile section

readme.md

@@ -12,7 +12,6 @@ A helpful checklist / collection of Search Engine Optimization (SEO) tips and te
 * [Sitemap](#sitemap)
 * [Errors and access](#errors-and-access)
 * [Performance](#performance)
-* [UX](#ux)
 * [Mobile](#mobile)
 * [Validation and accessibility](#Validation-and-accessibility)
 * [Search](#search)
@@ -98,20 +97,12 @@ A helpful checklist / collection of Search Engine Optimization (SEO) tips and te
 * if possible no redirects
 * compress images ([ImageOptim](https://imageoptim.com/))
 
-## UX
-* User friendly site
-* clickable links should not be too small
-
 ## Mobile
-* add viewport tag
-
-```
- <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1.0">
- ```
-
-* create a mobile-friendly site ([shown in search results](http://googlewebmastercentral.blogspot.be/2014/11/helping-users-find-mobile-friendly-pages.html))
-* [Mobile-Friendly Test](https://www.google.com/webmasters/tools/mobile-friendly/)
-* [AppLinks](http://applinks.org/documentation/)
+* **Viewport:** tell browsers how to adjust the page's dimension and scaling to suit the device  
+`<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1.0">`
+* **[mobile friendly](http://googlewebmastercentral.blogspot.be/2014/11/helping-users-find-mobile-friendly-pages.html):** mobile optimized sites are marked in search results. Test for [mobile friendly site](https://www.google.com/webmasters/tools/mobile-friendly/)
+* **[AppLinks](http://applinks.org/documentation/):** apps that link to your content can then use this metadata to deep-link into your app
+* **[Tap targets](https://developers.google.com/speed/docs/insights/SizeTapTargetsAppropriately):** clickable links should not be too small
 
 ## Validation and accessibility
 * Write valid markup ([HTML Validator](http://validator.w3.org/) [CSS Validator](http://jigsaw.w3.org/css-validator/))