adding content to networking
fixing tables.
first sentence for intro to tmux written, TaDa!
intro to tmux (creating, detaching, attaching sessions)
split tmux chapter in basics and config sub chapters, expanded both and included a sample .tmux.conf
added some links to internet resources, fixed typos and wrong rst formatting
deleted _tmux target to make travis happy
added installation instructions
add whisper section to Graphite chapter
add section about carbon cache to Graphite chapter
Merge branch 'master' into statsd-graphite-chapter
incorporate feedback
add carbon relay section
tried to fix broken epigraph for MacOS install instructions
crontab basics

How to list, create, edit and delete cron jobs.  Also describes crontab fields.
fixed broken link warning, the duplicate link targets were  hyperlinks to internet resources
moved references to separate chapter because urls tend to break apart the text flow
Added output of crontab command to file
Changed markdown syntax
cat basics

Includes: to standard output, to another file, and combining files