<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def init():
 """Initialize Yass in the current directory """

    yass_conf = os.path.join(CWD, "yass.yml")
    if os.path.isfile(yass_conf):
        print("::ALERT::")
        print("It seems like Yass is already initialized here.")
        print("If it's a mistake, delete 'yass.yml' in this directory")
    else:
        print("Init Yass in %s ..." % CWD)
        copy_resource("skel/", CWD)
        stamp_yass_current_version(CWD)
        print("Yass init successfully!")
        print("Run 'yass serve' to view the site")

    footer()