We do this for Makefile entries - looking for '##' that we put before each make command.

  ## help: prints this help message
  help:
     @echo "Usage: \n"
     @egrep -h "^## [a-zA-Z0-9\-]*:" ${MAKEFILE_LIST} | sed -e 's/##//' | column -t -s ':' |  sed -e 's/^/ /'

  ## build: builds JAR with dependencies
  build:
     mvn compile