icoffee

this is icoffee, which means immediately coffee compile, aha!
1. no watch or coffee combined any more
2. compile the file changed only
3. fast and convinient to configure, give detail information when coffee syntax error occurred
4. why not have a try

eg:

grunt.initConfig({
  icoffee: {
      taskname: {
        options: {
            bare: true
        },
        src: ["path/**/*.coffee", "./*.coffee"]
      }
    }
});