[MCL-2628] Launcher requiring Java 6 on OS X 10.10 Yosemite

Moderator Note

https://twitter.com/jbernhardsson/status/642344336567476224

The new OSX launcher for Minecraft is finaly done, you can download it here https://minecraft.net/download

When I open the launcher, pop-up says "To open “Minecraft” you need to install the legacy Java SE 6 runtime." Java 8u20 Build b17 is the only version of java that works on Mac OS X 10.10 Yosemite as of this post.