Link "Sweat the small stuff" post

That post includes information one isn't guaranteed to discover when using
this library as well as justification for adding the feature and the expense
of doing so. It should be linked from the project README.

README.md

@@ -12,11 +12,12 @@ the executable for a tool. Because most CLI tools print the help and then exit
 when invoked without arguments, this is often very frustrating for those users.
 
 mousetrap provides a way to detect these invocations so that you can provide
-more helpful behavior and instructions on how to run the CLI tool.
+more helpful behavior and instructions on how to run the CLI tool. To see what
+this looks like, both from an organizational and a technical perspective, see
+https://inconshreveable.com/09-09-2014/sweat-the-small-stuff/
 
 ### The interface
 
 The library exposes a single interface:
 
     func StartedByExplorer() (bool)
-