This codebase bundles the original Synapse Launcher project code and retains its original license. It does not use Synapse's UI part and instead provides a Wingpanel indicator.
To open the indicator via shortcut, add a custom shortcut in your keyboard settings with the following command:
wingpanel --toggle-indicator=com.github.tom95.indicator-synapse
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=/usr ../
make
sudo make install