adds working examples (#18)

Author: andrewMacmurray

README.md

@@ -8,6 +8,8 @@ See some examples here: https://elm-simple-animation-examples.surge.sh/
 
 Animate HTML, SVG (or any UI Elements) with declarative animations and transitions
 
+A working example: https://ellie-app.com/d5nyjJY3Ptna1
+
 ```elm
 import Html exposing (Html)
 import Simple.Animation as Animation exposing (Animation)
@@ -45,6 +47,8 @@ When you want some typesafe, simple, decorative animations or transitions, but y
 
 ## For Animations:
 
+A working example: https://ellie-app.com/d5nmZJv84f2a1
+
 1 . Define an animation (either `fromTo` or a sequence of `steps`)
 
 ```elm
@@ -72,6 +76,8 @@ spinningBox =
 
 ## For Transitions
 
+A working example: https://ellie-app.com/d5nxzgtzCpva1
+
 Just add a transition as a Html Attribute
 
 ```elm