Our software uses two libraries (ClickEncoder.h & TimerOne.h), which are required to be installed from a .zip-file before. You can find a brief tutorial on how to install libraries here: https://www.arduino.cc/en/Guide/Libraries#toc4
Required libraries: https://github.com/0xPIT/encoder http://playground.arduino.cc/Code/Timer1
v1.01: conversion from string constant to 'char*' warnings solved (not tested on the pump, yet)