Add http driver to README

README.md

@@ -47,6 +47,45 @@ Query the size of a directory in bytes by observing `<file-system-usage "/SOME/P
 ]
 ```
 
+### HTTP driver
+
+Experimental HTTP server that services requests using [some version](https://git.syndicate-lang.org/syndicate-lang/syndicate-protocols/src/commit/9864ce0ec86fb2f916c2aab318a1e6994ab8834c/schemas/http.prs) of the http Syndicate protocol schema.
+
+```
+# Configuration example
+let ?not-found = dataspace
+$not-found ? <request _ ?res> [
+  $res ! <status 503 "Service unavailable">
+  $res ! <done "No binding here.">
+]
+
+let ?greeting = dataspace
+$greeting ? <request _ ?res> [
+  $res ! <status 200 "ok">
+  $res ! <chunk "Hello world">
+  $res ! <done "!">
+]
+
+let ?http = dataspace
+$http [
+  <http-bind #f 80 get [ ] $not-found>
+  <http-bind #f 80 get [|...|] $not-found>
+  <http-bind #f 80 get ["hello"] $greeting>
+]
+
+? <service-object <daemon http-driver> ?cap> [
+  $cap <http-driver { dataspace: $http }>
+]
+
+<daemon http-driver {
+  argv: [ "/bin/syndesizer" ]
+  clearEnv: #t
+  protocol: application/syndicate
+}>
+
+<require-service <daemon http-driver>>
+```
+
 ### JSON Socket Translator
 
 Communicate with sockets that send and receive lines of JSON using `<send …>` and `<recv …>` messages.