Set the following environment variables in your OS and/or IDE:
export MONGOPUSH_BINARY="${HOME}/go/src/github.com/10gen/mongopush/dist/mongopush-osx-x64"
export MONGOPUSH_SOURCE_URI="mongodb+srv://mongopush:MYPASSWORD@mongopush-test-source.abcde.mongodb.net"
export MONGOPUSH_TARGET_URI="mongodb+srv://mongopush:MYPASSWORD@mongopush-test-target.abcde.mongodb.net"