Filled out README with some semi-useful information

Author: Nicholas Rawlings

README.md

@@ -1,4 +1,31 @@
 ArrayDiff
 =========
 
-Finds the difference between two JavaScript arrays by computing the longest common subsequence between them
+ArrayDiff computes the difference between two JavaScript arrays (as well as any other object that uses numeric subscripts, such as a string or DOMNodeList) by finding the [longest common subsequence](https://en.wikipedia.org/wiki/Longest_common_subsequence_problem) between them.
+
+## Example
+
+```javascript
+var thisArray = 'nematode knowledge'.split(''),
+    thatArray = 'empty bottle'.split(''),
+    arrayDiff = new ArrayDiff(thatArray, thisArray);
+
+arrayDiff.diff.forEach(function(element) {
+
+    if (element.added()) {
+        var operation = '+'
+    } else if (element.removed()) {
+        var operation = '-';
+    } else {
+        var operation = ' ';
+    }
+    
+    console.log('%s %s', operation, element.item);
+    
+});
+```
+
+
+## Acknowledgements
+
+Many thanks to [Professor David Eppstein](http://www.ics.uci.edu/~eppstein/) of the University of California, Irvine, whose [lecture notes](http://www.ics.uci.edu/~eppstein/161/960229.html) from February 1996 helped me get my head around the dynamic programming solution to the longest common subsequence problem.