Stella SDK first time installers:
$ cd /opt
$ git clone https://github.com/morningtec/StellaSDK.git
$ /opt/StellaSDK/bin/stella-config --install
Updating Stella SDK to r2.0
$ cd /opt/StellaSDK
$ git reset --hard r2.0
$ /opt/StellaSDK/bin/stella-config --install