Tolu Ogunsanya

this is the error I get when i run the script ``` Toluwanis-MacBook-Pro:gapic-generator-kotlin tolu$ sudo ./docker-build.sh ~/src/gapic-generator-kotlin/gax-kotlin ~/src/gapic-generator-kotlin ./docker-build.sh: line 21: ./gradlew: No such file or directory ~/src/gapic-generator-kotlin ~/src/gapic-generator-kotlin/generator ~/src/gapic-generator-kotlin...

Also, it would be nice to have more details on how to use the protoc plugin to generate kotlin files.