Document on exit code in case of MultiError is given
Document on exit code in case of MultiError is given

murdinc/cli,codegangsta/cli,murdinc/cli,phinnaeus/cli,murdinc/cli,pjvds/cli,urfave/cli,pjvds/cli,phinnaeus/cli,pjvds/cli,minio/cli,minio/cli,phinnaeus/cli,codegangsta/cli,minio/cli,urfave/cli