add Makefile to guide configuration and perform installation

This change replaces icecast.xml with icecast.xml.template.  A
complete icecast.xml is no-longer provided.

Instead, to create icecast.xml run:

  make

You can generate icecast.xml and then install it:

  make install

This doesn't currently do any aspectss of making the system ready to
run icecast (e.g. performing `sudo apt install icecast2`, or similar).

README.md

@@ -7,8 +7,15 @@ Stuff to install on a (nominally) Ubuntu 24 host to create (e.g.) shred.ing to c
 
  - [X] fix issue where streams HTML player disconnects after an hour
  - [X] create fallback streams to support switching casters
- - [ ] write a tutoral explaining how to use the files in this repo to create a streaming radio station
+ - [-] build guided installer
+ - [ ] write a tutoral
 
+# Quick Start
+
+  git clone https://code.bru.st/corwin/shred.ing-server.git
+  apt-get install icecast2
+  make install
+  links localhost:8000
 
 # ABSTRACT