new_contents: import codegen, jinja2, sys
  
  def compile(path, templates):
  	env = jinja2.Environment(loader=jinja2.FileSystemLoader(path))
  	print codegen.generate(env, templates)
  
  if __name__ == '__main__':
  	compile(sys.argv[1], sys.argv[2:])
  
subject: Add compiler script.