This editor makes use of the ChainPad realtime editor engine and binds to a the XWiki plain WikiText editor. You can install it from the XWiki Extension Manager or build it manually using node-xwikimodel to construct the .xar file. install the XWiki Realtime Backend from the Extension Manager and build the .xar file as follows:
# First make sure you have an up-to-date version of xwiki-tools
npm install -g xwiki-tools
# then build the xar with xargen
xargen
# and import the resulting XAR file.
Alternatively you can build and import in one operation using:
xargen --post Admin:admin@mywikidomain.name:8080/xwiki
Or generate a Maven compatible build using:
xargen --mvn