Update Readme

Author: MarcGodard

README.md

@@ -1,3 +1,15 @@
 # DiffLib
 ---------------
-Registers changes on a line by line bases and can apply those changes elsewhere.
+Registers changes on a line by line bases and can apply those changes elsewhere.
+
+
+### Get Changes
+
+```$xslt
+let diff = new diffLib.getDiff(oldText, newText)
+```
+
+### Apply Changes
+```$xslt
+let newText = diffLib.applyChanges(diff, oldText)
+```