Adds nightlies and cdn info

README.md

@@ -22,6 +22,8 @@ code tab of https://github.com/tgstation/tgstation
 (note: this will use a lot of bandwidth if you wish to update and is a lot of
 hassle if you want to make any changes at all, so it's not recommended.)
 
+Option 3: Download a pre-compiled nightly at https://tgstation13.download/nightlies/ (same caveats as option 2)
+
 ## INSTALLATION
 
 First-time installation should be fairly straightforward. First, you'll need
@@ -116,6 +118,14 @@ To enable an away mission open `config/awaymissionconfig.txt` and uncomment one
 
 The SQL backend requires a Mariadb server running 10.2 or later. Mysql is not supported but Mariadb is a drop in replacement for mysql. SQL is required for the library, stats tracking, admin notes, and job-only bans, among other features, mostly related to server administration. Your server details go in /config/dbconfig.txt, and the SQL schema is in /SQL/tgstation_schema.sql and /SQL/tgstation_schema_prefix.sql depending on if you want table prefixes.  More detailed setup instructions are located here: https://www.tgstation13.org/wiki/Downloading_the_source_code#Setting_up_the_database
 
+## WEB/CDN RESOURCE DELIVERY 
+
+Web delivery of game resources makes it quicker for players to join and reduces some of the stress on the game server.
+
+1. Edit compile_options.dm to set the `PRELOAD_RSC` define to `0`
+1. Add a url to config/external_rsc_urls pointing to a .zip file containing the .rsc.
+    * If you keep up to date with /tg/ you could reuse /tg/'s rsc cdn at http://tgstation13.download/byond/tgstation.zip. Otherwise you can use cdn services like CDN77 or cloudflare (requires adding a page rule to enable caching of the zip), or roll your own cdn using route 53 and vps providers.
+	* Regardless even offloading the rsc to a website without a CDN will be a massive improvement over the in game system for transferring files.
 
 ## IRC BOT SETUP