access data through official APIs

1. Access data through official APIs
2. Available for controlled data
3. Enable save log info to file
4. Remove useless token from code

test for skip restricted data?

v0.2.3-beta

testing for username and password

--username and --passwd

not tested yet

handle download error better

v0.2.2

2019.09.18 handle error better

add tar wrapper and using json to log downloading progress

v0.2.1

2019.08.31 update log