docs: Explain algorithm better and include reference to the alphanum …

…algorithm

Closes #6

README.md

@@ -1,12 +1,12 @@
 # String Natural Compare
 
-Compare alphanumeric strings the same way a human would, using a natural order algorithm
-
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+Compare alphanumeric strings the same way a human would, using a natural order algorithm (originally known as the [alphanum algorithm](http://davekoelle.com/alphanum.html)) where numeric characters are sorted based on their numeric values rather than their ASCII values.
+
 ```
 Standard sorting:   Natural order sorting:
     img1.png            img1.png