[documentation] format demo and browser links

Author: zombieFox

README.md

@@ -3,14 +3,9 @@ A neutral new tab page accented with a chosen colour. Customise the layout, styl
 
 [![nightTab Demo](assets/banner/banner-1400-560.png)](https://zombiefox.github.io/nightTab/)
 
-[See the demo in action](https://zombiefox.github.io/nightTab/)
-
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-
-### [Chrome Extension](https://chrome.google.com/webstore/detail/nighttab/hdpcadigjkbcpnlcpbcohpafiaefanki)
-### [Firefox Add On](https://addons.mozilla.org/en-GB/firefox/addon/nighttab/)
-
----
+|[See the demo in action](https://zombiefox.github.io/nightTab/)|[Install nightTab Extension](https://chrome.google.com/webstore/detail/nighttab/hdpcadigjkbcpnlcpbcohpafiaefanki)|[Install nightTab Add On](https://addons.mozilla.org/en-GB/firefox/addon/nighttab/)|[Buy me a coffee](https://www.buymeacoffee.com/zombieFox/)|
+|:-------------:|:-------------:|:-------------:|:-------------:|
+|[![nightTab](./src/icons/icon-48.png)](https://zombiefox.github.io/nightTab/)|[![Chrome](assets/browser-logos/chrome-48x48.png)](https://chrome.google.com/webstore/detail/nighttab/hdpcadigjkbcpnlcpbcohpafiaefanki)|[![Firefox](assets/browser-logos/firefox-48x48.png)](https://addons.mozilla.org/en-GB/firefox/addon/nighttab/)|[![coffee](https://cdn.buymeacoffee.com/buttons/bmc-new-btn-logo.svg)](https://www.buymeacoffee.com/zombieFox/)|
 
 ### Features
 - Header