Fix lintian warning from debian packaging

Thanks Tanguy Ortolo
Merge pull request #306 from mxjeff/man.fix

Fix manpage-has-errors-from-man lintian warning
Update README.rst

Glances is in Gentoo's portage! http://packages.gentoo.org/package/sys-process/glances
Update Homebrew link.
Remove obsolete install instructions for OS X/Homebrew.
Add the bitdeli.com badge
Add German translation
Merge pull request #307 from dtiersch/master

Add German translation
Add thread number in the processes summary line
Update badge in the README.rst
reUpdate badge in the README.rst
Manage disks and network interfaces hidden lists (issue #304)
Add CPU stats to the CSV output
Correct a bug when a new client talk with a older one...
Add system uptime and redesign system information
Add caching for process' name and commandline (reduce CPU consumption ~10%)
Update wide screenshot
Fix password flags handling [issues #314 & #315]
Add control if server did not return uptime stat
Correct process name encode issue (#316)
Add missing softirq stat against total CPU usage
Fix typos in config file