Remove TinyIB DEMOS file

This list was being used by spammers, and the linked sites frequently
contain pornography. Link to a read-only demo installation instead.

Resolves #221.

DEMOS.md

@@ -1,53 +0,0 @@
-TinyIB Installations
-====
-
-* https://1chan.us
-* http://not99chan.org
-* https://www.1chan.net
-* https://home.pilsfree.net/qwerty/sandbox/ib/
-* https://agathachan.club/Agatha/
-* https://board.ste.lol
-* http://inch.esy.es/b/
-* https://csscwebsite.azurewebsites.net/b/
-* https://board.sw-club.ru
-* https://polycancer.org
-* http://club.meriner.ru
-* https://lampach.net/r/
-* http://www.loistolauta.org
-* http://trumienka.eu5.net
-* http://mchan.eu5.org
-* https://megamindchan.org
-* https://saracean.com/b/
-* https://secretvipquality.website/img/
-* https://chan.funshitposting.xyz
-* http://spychan.freezonereader.net
-* http://thedailyautist.com/board/
-* https://vtchan.org
-* https://audiochan.org
-
-Want to add your installation?  Please create a new issue asking that it be added.
-
-***
-
-[![RIP](https://code.rocketnine.space/tslocum/tinyib/raw/branch/master/rip.png)](https://code.rocketnine.space/tslocum/tinyib/raw/branch/master/rip.png)
-
-* https://chan.romtypo.com
-* http://5channel.net
-* http://98chan.org
-* http://lchan.ga
-* http://chillchan.ga
-* http://zerochan.us
-* http://wertyo.com
-* http://not4chan.ca
-* http://eggchan.org
-* http://degenb.com
-* http://qabna.com
-* http://negativeonechan.site88.net/home.html
-* http://funchan.net
-* http://grillchan.t28.net
-* http://memersunite.org
-* http://MMXchan.org
-* http://ticklechan.biz
-* https://chingchong.info
-* https://4usa.com
-* https://trashbxg.pw/chan/

README.md

@@ -2,7 +2,7 @@
 [![Translate](https://hosted.weblate.org/widgets/tinyib/-/tinyib/svg-badge.svg)](https://hosted.weblate.org/projects/tinyib/tinyib/)
 [![Donate](https://img.shields.io/liberapay/receives/rocketnine.space.svg?logo=liberapay)](https://liberapay.com/rocketnine.space)
 
-See [DEMOS.md](https://code.rocketnine.space/tslocum/tinyib/src/branch/master/DEMOS.md) for a list of sites running TinyIB.
+A [**read-only demo**](https://tinyib.rocketnine.space) is available.
 
 ## Features