changed rimraf in 'clean' task to use del (issue #11)
changed rimraf in 'clean' task to use del (issue #11)

nlesc-sherlock/punchcardjs-demo,nlesc-sherlock/punchcardjs-demo,nlesc-sherlock/punchcardjs,nlesc-sherlock/punchcardjs,nlesc-sherlock/punchcardjs-demo,nlesc-sherlock/punchcardjs