Added empty commany, updated and reorganize docs
More updated and a few typo fixes
better bolding of Codio option
Updated index
whoops, fix numbered list
a few more updates
add missing periods
add duckduckgo to list of releasable repos
slight phrasing change
bin/duckpan: minor documentation fixes.

- Remove an errant :
- Document server cachesec
Merge pull request #159 from duckduckgo/zaahir/duckpan-empty

Added empty command, updated and reorganize docs
Merge branch 'master' of github.com:duckduckgo/p5-app-duckpan