v0.15

Changelog

• c94c7ad 1: format list with file ID column 2: format created time with year, format: 2006-01-02 15:04:05
• 6ba1599 add lsit command
• 78ab93e add some explanations
• 956bbce add the acquisition quota command.
• 52ae949 fix the list display.
• 5b2dccd fix upload bug
• 5f1a6b5 update readme