Update ReadMe with rationale for building Sparkle

README.markdown

@@ -35,7 +35,7 @@ Please visit [Sparkle's website](http://sparkle-project.org) for up to date docu
 
 ## Usage
 
-See [getting started guide](https://sparkle-project.org/documentation/). No code is necessary, but a bit of Xcode configuration is required.
+See [getting started guide](https://sparkle-project.org/documentation/). No code is necessary, but a bit of configuration is required.
 
 ### Troubleshooting
 
@@ -52,7 +52,9 @@ If you are adding a symbol to the public API you must decorate the declaration w
 
 ### Building the distribution package
 
-`cd` to the root of the Sparkle source tree and run `make release`. Sparkle-*VERSION*.tar.xz (or .bz2) will be created in a temporary directory and revealed in Finder after the build has completed.
+You do not usually need to build a Sparkle distribution unless you're making changes to Sparkle itself.
+
+To build a Sparkle distribution, `cd` to the root of the Sparkle source tree and run `make release`. Sparkle-*VERSION*.tar.xz (or .bz2) will be created in a temporary directory and revealed in Finder after the build has completed.
 
 Alternatively, build the Distribution scheme in the Xcode UI.