Add missing VLC instructions

[patrickelectric]

from our old guide:

## VLC

VLC can record and display the received video. To receive the video video from companion, it's necessary
to go in: **Media** → **Open Network Stream** → **http://192.168.2.2:2770/vlc.sdp** → **play**.

<img src="/images/vlc/media.png" class="img-responsive img-center" style="max-height:400px;" align="middle">

<img src="/images/vlc/network.png" class="img-responsive img-center" style="max-height:400px;" align="middle">

Note: It's possible to configure the caching size of VLC to allow a faster time response from the video, this configuration
is done under: **Media** → **Open Network Stream** → **Show more options** → **Set caching to a number around 200** → **play**

<img src="/images/vlc/caching.png" class="img-responsive img-center" style="max-height:400px;" align="middle">

The record and conversion can be done with the save menu: **Media** → **Convert** → **Network** → **Convert / Save** → **Select format** → **Select destination** → **Start**.

<img src="/images/vlc/convert.png" class="img-responsive img-center" style="max-height:400px;" align="middle">

<img src="/images/vlc/save.png" class="img-responsive img-center" style="max-height:400px;" align="middle">

<img src="/images/vlc/start-convert.png" class="img-responsive img-center" style="max-height:400px;" align="middle">