Updating powered-by SmartSprites site.
A SmartSprites-based project added.
Fix JDK7 compile errors.
Merge branch 'master' of github.com:carrotsearch/smartsprites

Conflicts:
	src/main/java/org/carrot2/labs/smartsprites/message/Message.java
	src/test/java/org/carrot2/labs/smartsprites/SmartSpritesParametersTest.java
	src/test/java/org/carrot2/labs/smartsprites/SpriteBuilderTest.java
Removing CloseableUtils, replaced with Guava's Closeables.
Upgrade Guava to version 14.0.1.
SMARTSPRITES-81: documentation for the sprite-scale property.