README.md: add info about make dist

yadvr · web-flow · commit 6323a316c6fd · 2023-11-15T20:14:38.000+05:30
diff --git a/README.md b/README.md
@@ -39,6 +39,10 @@ Build and run manually:
     $ make all
     $ ./bin/cmk
 
+To build for all distros and platforms, run:
+
+    $ make dist
+
 ### Community
 
 You may join the relevant mailing list(s) for cloudmonkey related discussion:
