Added July's contributors to backers.md

BACKERS.md

@@ -4,8 +4,12 @@
 Thanks to the following backers who have contributed to the Atomic Development Fund: [http://atomicgameengine.com/funding/](http://atomicgameengine.com/funding/)
 
 Brandon Lamb: https://github.com/brandonlamb  
+Aaron Hibberd: http://www.hibbygames.com/  
 Todd Wahoske: http://www.toddwahoske.com/  
+Type1J: https://github.com/Type1J  
 c.trauma: https://github.com/CTrauma  
 Keith Johnston https://github.com/KeithJohnston  
 BenWolf  
 dragonCASTjosh https://github.com/dragonCASTjosh  
+louis-mclaughlin  
+christoffer