Clarify versioned release install

Author: puredanger

README.md

@@ -59,11 +59,16 @@ Versioned formulas are named `[email protected]` (homebrew convention).
 
 Note that you cannot install both the stable version AND a specific named version - these will conflict. You must `brew uninstall clojure` first before installing a specific version. There are various cases where you may still have uninstalled but linked versions - in those cases `brew` will give you a helpful message telling you what to do.
 
-To install or uninstall a versioned Clojure CLI from the Clojure tap:
+To install a versioned Clojure CLI from the Clojure tap, you should first uninstall any existing Clojure formula:
+
+```
+brew uninstall clojure
+```
+
+And then use this command to install a specific versioned release:
 
 ```
 brew install clojure/tools/[email protected]
-brew uninstall [email protected]
 ```
 
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