Merge pull request #208 from notpeter/master

Added ffmpeg, haxelib, Matt's Traceroute and imagemagick convert.
Add docs for "yes" command
Add docs for "time"
Merge pull request #210 from EvanHahn/yes-command

Add docs for "yes" command
Merge pull request #211 from EvanHahn/time-command

Add docs for "time"
Adding docs for 'sudo'
Better formatting.
Merge pull request #212 from hemanth/master

Adding docs for 'sudo'
add base64 page for linux
Merge pull request #213 from felixonmars/base64-page

add base64 page for linux
add page for head in mac and linux
Merge pull request #214 from felixonmars/head-page

add page for head in mac and linux
add sha1sum, sha224sum, sha256sum, sha384sum, and sha512sum pages
add pwd page
Merge pull request #216 from felixonmars/pwd-page

add pwd page
Merge pull request #215 from felixonmars/shaNsums-pages

add sha1sum, sha224sum, sha256sum, sha384sum, and sha512sum pages
ping page: add -n param
Merge pull request #217 from felixonmars/ping-page

ping page: add -n param