get_activity_data       Get activity data from fitbit.com
get_daily_data          Get daily data from fitbit.com
get_intraday_data       Get intraday data from fitbit.com
get_premium_export      Get official data export from fitbit.com
                        premium
get_sleep_data          Get sleep data from fitbit.com
get_weight_data         Get weight data from fitbit.com
login                   Login to fitbit.com and get cookie
