sets up the config options by reading globals saved in peasoup/global.py
        as self.pcfg

def get_pcfg():
        '''
        sets up the config options by reading globals saved in peasoup/global.py
        as self.pcfg
        '''
        path = os.path.dirname(AppBuilder.main_file)
        file = os.path.join(path,
                            PEASOUP_USER_DIR,
                            PEASOUP_CONFIG_FILE)
        with open(file) as f:
            pcfg = json.load(f)
        return pcfg