Download and install latest deb package from github via terminal

I would like to download and install the latest *.deb*-package from github ( to be exact). How can I download the latest package (e.g. *otrverwaltung_0.9.1_all.deb*) automatically with a script from github? What I have tried so far: wget -O- -q --no-check-certificate https://github.com/elbersb/otr-verwaltung/downloads | grep -o -l -e 'otrverwaltung_[0-9.]*_all.deb' #The filename should be saved in a variable OTRPACKAGE sudo dpkg -i OTRPACKAGE