Update gemini page and add new spartan page

gemini.md

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-<!-- this wiki page seems done -->
 # gemini
 
 the [gemini protocol](https://gemini.circumlunar.space/) ([http
@@ -29,6 +28,7 @@ proxy](https://portal.mozz.us).
 ## clients
 
 - [amfora](https://github.com/makeworld-the-better-one/amfora)
+- [gelim](https://sr.ht/~hedy/gelim)
 
 
 ## CGI

spartan.md

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+# spartan
+
+spartan is a relatively new internet protocol that is somewhat similar to
+[gemini](gemini.html) but a lot of simpler to play with because of the lack of
+TLS.
+
+like gemini, it is much lighter than the web and has a much smaller user base.
+
+first time hearing about spartan? you should check out its homepage:
+[gemini://spartan.mozz.us](https://portal.mozz.us/gemini/spartan.mozz.us)
+
+at tilde.cafe, we run a spartan server
+([spsrv](https://tildegit.org/hedy/spsrv)), and all ~cafe users can have their
+own files hosted on spartan by putting content in their `~/public_spartan`
+directory.
+
+your spartan site will then be live at both spartan://tilde.cafe/~username/ and
+spartan://username.tilde.cafe
+
+the `~/public_spartan` directory is not created by default. use `mkdir
+~/public_spartan` to create it, then you can start building your site!
+
+spartan uses gemtext markup (instead of, say, html for the web)
+for more information about how you write gemtext, check out the [Introduction
+to Gemtext Markup](https://gemini.circumlunar.space/docs/gemtext.gmi), there is
+also a [cheatsheet](https://gemini.circumlunar.space/docs/cheatsheet.gmi).
+
+to browse spartan content, you will need a client or a [web
+proxy](https://portal.mozz.us/spartan/mozz.us).
+
+
+## clients
+
+- [gelim](https://sr.ht/~hedy/gelim): try `gelim spartan://tilde.cafe` at the
+  terminal
+- or just use the web proxy [portal.mozz.us](https://portal.mozz.us/spartan/mozz.us)
+
+
+## CGI
+
+make sure you set the correct **shebang** and make the file **executable**.
+
+then, print the status and type per the [spartan
+spec](https://portal.mozz.us/spartan/spartan.mozz.us): here's a simple example
+in sh
+
+    #!/bin/sh
+    printf "2 text/gemini\r\n"
+    echo "hello world"
+
+note that the first line **must send `\r\n`**
+
+if you want to debug your script, you can redirect your stderr into a file, if
+you use shell scripts, you'd do it like this:
+
+	#!/bin/sh
+	exec 2>/tmp/my_spartan_debug.txt
+	printf "2 text/gemini\r\n"
+	echo "hello world"
+
+keep in mind that all cgi scripts run under a single user ("spartan"), so it
+might not have permission to run scripts, or write files, that you can
+
+also be careful about what the scripts can write, because there's nothing
+preventing someone else from overwriting your files, with their scripts!
+
+you can also check for the user's input. for example, you your `index.gmi` you
+can have a input prompt:
+
+```gmi
+=: echo.sh send some input
+```
+
+then in `echo.sh`:
+
+```sh
+#!/usr/bin/env sh
+
+printf "2 application/octet-stream\r\n"
+cat /dev/stdin
+```
+
+try visiting your spartan page, enter some input on that link line and see the
+result!
+
+alternatively you could send input directly in gelim:
+
+```sh
+gelim spartan://username.tilde.cafe/echo.sh -Ii 'hello!'
+```
+
+(note: `-I` is so gelim quits immediately after displaying output, `-i` is for
+sending the input)