update folder names for steamcmd

Rename source_servers to steamcmd_servers
Rename rust-staging to rust_staging

Add a README for steamcmd server section

Update main README with new links.

README.md

@@ -83,15 +83,15 @@ If you are reading this it looks like you are looking to add an egg to your serv
 
 [OpenTTD](/openttd/)
 
-[Source](/source_servers/)  These eggs use steamcmd to install  
-* [7 Days to Die](/source_servers/7_days_to_die/)  
-* [ARK Survival Evolved](/source_servers/ark_survival_evolved/)
-* [HLDS server](/source_servers/hlds_server)
-* [PixARK](/source_servers/pixark/)  
-* [Rust Staging Branch](/source_servers/rust-staging/)
-* [Starbound](/source_servers/starbound)
-* [Sven Co-op](/source_servers/svencoop)
-* [Mordhau](/source_servers/mordhau)
+[steamcmd servers](/steamcmd_servers/)  These eggs use steamcmd to install  
+* [7 Days to Die](/steamcmd_servers/7_days_to_die/)  
+* [ARK Survival Evolved](/steamcmd_servers/ark_survival_evolved/)
+* [HLDS server](/steamcmd_servers/hlds_server)
+* [PixARK](/steamcmd_servers/pixark/)  
+* [Rust Staging Branch](/steamcmd_servers/rust_staging/)
+* [Starbound](/steamcmd_servers/starbound)
+* [Sven Co-op](/steamcmd_servers/svencoop)
+* [Mordhau](/steamcmd_servers/mordhau)
 
 [Squad](/squad/)  
 

steamcmd_servers/README.md

@@ -0,0 +1,24 @@
+# steamcmd servers
+
+This is a collection of servers that use steamcmd to install.
+
+## 7 Days To Die
+[7dtd](7_days_to_die/)
+
+## ARK
+[ark](ark_survival_evolved/)
+
+## HLDS Server
+[hlds](hlds_server/)
+
+## Mordhau
+[mordhau](mordhau/)
+
+## Rust Staging
+[rust staging](rust_staging/)
+
+## Starbound
+[starbound](starbound/)
+
+## Sven coop
+[svencoop](svencoop)