enable to run test by `rspec`
fix log rotate
Merge pull request #10 from sonots/dot.rspec

Enable to run tests with `rspec`
Merge pull request #11 from sonots/fix_log_rotate_age

fix log rotate
Revert "fix log rotate"

This reverts commit 65ea45a814a2984b289122da1eb812452d7fb050.
DaemonLogger: fixed log rotation [#9]
DaemonLogger supports :trace level
implemented :log_stdout and :log_stderr options to Server [#9]