6_Logging: Enable basic logging in controller.
6_Logging: 1. Refine logging format. 2. Refine logging lines.
6_Logging: Write logs to local/log/deuce.log
6_Logging: Add and use Python logging RotatingFileHandler to control log file size and bkup count
6_Logging: correct logging level on file creation
6_Logging_2: merge to repo/master
6_Logging_2: merge repo/master
merge new repo/master
Merge pull request #40 from raxyu/6_Logging_2

6 logging 2