Well, seems @eonpatapon is not gonna maintain caffeine anymore for sure. I am in charge of caffine for temporary, as long as possible. For telling apart from original caffine, rename to caffeine-plus, but keeping extension domain patapon for @eonpatapon. Any feedback report to this trunk, please

And, many thanks to @eonpatapon for creating this awesome extension

gnome-shell-extension-caffeine-plus

Fill the cup to inhibit auto suspend and screensaver.

This extension supports gnome-shell 3.4 to 3.26.

Use the gnome-shell-before-3.10 branch for gnome shell 3.4, 3.6 and 3.8.

White: Empty cup = normal auto suspend and screensaver. Filled cup = auto suspend and screensaver off. Green: No empty cup status. Filled cup = auto suspend and screensaver off always.

Installation from e.g.o

seems e.g.o did not approved my version, waiting long long time but pending only. following installation from git as well

https://extensions.gnome.org/extension/517/caffeine/

Installation from git

git clone git://github.com/qunxyz/gnome-shell-extension-caffeine.git
cd gnome-shell-extension-caffeine
./build.sh
cp -r caffeine-plus@patapon.info ~/.local/share/gnome-shell/extensions

Restart the shell and then enable the extension.

Development

git clone git://github.com/qunxyz/gnome-shell-extension-caffeine.git
cd gnome-shell-extension-caffeine
./build.sh
ln -s caffeine-plus@patapon.info ~/.local/share/gnome-shell/extensions
 CTRL+F2, and enter r to Restart the shell. then enable the extension.

modified extension.js and execute below shell 
./build.sh

CTRL+F2, and enter r to Restart the shell.