'init method for Theme
Args:
name: name if the theme
theme_dir_name: directory name of the theme
themes_base_dir: directory path of the folder that contains the theme'

def __init__(self, name='', theme_dir_name='', themes_base_dir=None):

    self.name = name
    self.theme_dir_name = theme_dir_name
    self.themes_base_dir = themes_base_dir
