Get the current version on GitHub
    `url` looks like 'https://raw.githubusercontent.com/aquatix/ns-notifications/master/VERSION'

def get_repo_version(url):
    """
    Get the current version on GitHub
    `url` looks like 'https://raw.githubusercontent.com/aquatix/ns-notifications/master/VERSION'
    """
    response = requests.get(url)
    if response.status_code == 404:
        return None
    else:
        return response.text.replace('\n', '')