improve README.rst for first-time users

I found it confusing to get started with debcargo-conf on a minimal
debian VM.  These instruction changes would have gotten me past the
first hurdles faster, so i could fail in more interesting ways.

Closes: https://salsa.debian.org/rust-team/debcargo-conf/issues/8

diff --git a/README.rst b/README.rst
index d749f255ba9e84408f5fea83cdf558999510e125..b471eccaac6f1ef494758ea9f1aff72b1d4a10cb 100644 (file)
--- a/README.rst
+++ b/README.rst
@@ -3,7 +3,11 @@ Instructions
 
 To get set up, run::
 
-  apt update && apt install debcargo
+  apt update && apt install cargo debcargo
+
+As your regular user, update the crates.io index:
+
+  cargo search
 
 Then for each new package: