Added example sketches.

Changed debounce logic to subtract ms times.

ReadMe.txt

@@ -0,0 +1,13 @@
+ReadMe file for Arduino Button Library v1.0
+https://github.com/JChristensen/Button
+Jack Christensen Mar 2012
+
+This work is licensed under the Creative Commons Attribution-ShareAlike 3.0
+Unported License. To view a copy of this license, visit
+http://creativecommons.org/licenses/by-sa/3.0/ or send a letter to Creative
+Commons, 171 Second Street, Suite 300, San Francisco, California, 94105, USA.
+
+--------------------------------------------------------------------------------
+Work in progress.
+Please check back later.
+Thanks! ... jc