updated readme

README.md

@@ -3,6 +3,16 @@
 Utility for writing and managing gemini logs (gemlogs) and atom feeds without
 needing a cgi script.
 
+Dependencies:
+other than `toot` you really should have all these installed if you're on linux.
+* bash and all its goodies (duh)
+* perl
+* `date`
+* `tr`
+* `sed`
+* [the toot cli](https://github.com/ihabunek/toot) — only if you're using the
+  automatic mastodon toot functionality
+
 To install:
 1. put it wherever you want and just add it to path
 2. make sure you modify `make_globals()` and `build_entries()` in the script to