Fix demo links with github hosting

Finally got around to this!
Fixes #118
Fixes #18

Author: dfreedm

README.md

@@ -70,10 +70,10 @@ By default, no PointerEvents are sent from an element. This maximizes possibilit
 
 ### Examples
 
-- [Simple Event Example](http://polymer-project.org/polymer-all/PointerEvents/samples/simple/index.html)
-- [Pointer Painting](http://polymer-project.org/polymer-all/PointerEvents/samples/paint/index.html)
-- [Multi Pointer Trac](http://polymer-project.org/polymer-all/PointerEvents/samples/tracker/index.html)
-- [Empty Space Game!](http://polymer-project.org/polymer-all/PointerEvents/samples/spaceship/index.html)
+- [Simple Event Example](http://polymer.github.io/PointerEvents/samples/simple/index.html)
+- [Pointer Painting](http://polymer.github.io/PointerEvents/samples/paint/index.html)
+- [Multi Pointer Trac](http://polymer.github.io/PointerEvents/samples/tracker/index.html)
+- [Empty Space Game!](http://polymer.github.io/PointerEvents/samples/spaceship/index.html)
 
 ## Polyfill Details