Fix directory name in setup

[yunhailuo]

Setup failed due to wrong script directory name as

    Complete output (5 lines):
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/Users/yunhailuo/Github/pulsarpy-to-encodedcc/setup.py", line 23, in <module>
        scripts.remove(os.path.join(SCRIPTS_DIR,"__init__.py"))
    ValueError: list.remove(x): x not in list
    ----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.