Reauthenticate if required (#8)
Merge branch 'master' of github.com:junegunn/redis-stat

Conflicts:
	lib/redis-stat.rb
Improve terminal output

- Suppress ANSI codes in Windows terminal (#10)
- Suppress ANSI codes when output is not a terminal device (e.g. pipe)
Describe limited Windows support
More accurate interval with LPS
Flush CSV output immediately
Allow relative path of CSV output