This:
Error: Your node.js version v0.10.28 is too old. Please update node.js to version >=4.0.0 and run pimatic again. See you again.
is a response from pimatic 0.9. so he must have 0.9 install.ed
try this:
go to the pimatic folder:
cd /home/pi/pimatic-app/node_modules
git clone https://github.com/pimatic/pimatic.git
cd pimatic
npm install