JavaFX runtime not found / OX X 10.7 / x64 / java 1.8

Error:

```bash
$ ruby samples/test_all_the_samples.rb 
================================================================================
 /Users/jeremy/Code/jrubyfx/samples/fxml/Demo.rb
================================================================================
JavaFX runtime not found.  Please install Java 7u6 or newer or set environment variable JFX_DIR to the folder that contains jfxrt.jar 
If you have Java 7u6 or later, this is a bug. Please report to the issue tracker on github. Include your OS version, 32/64bit, and architecture (x86, ARM, PPC, etc)
```

Sysinfo:

```bash
$ java -version
java version "1.8.0-ea"
Java(TM) SE Runtime Environment (build 1.8.0-ea-b75)
Java HotSpot(TM) 64-Bit Server VM (build 25.0-b17, mixed mode)

$ ruby -v
jruby 1.7.2 (1.9.3p327) 2013-01-04 302c706 on Java HotSpot(TM) 64-Bit Server VM 1.8.0-ea-b75 +indy [darwin-x86_64]

$ uname -a
Darwin Jeremys-MBA.local 11.4.2 Darwin Kernel Version 11.4.2: Thu Aug 23 16:25:48 PDT 2012; root:xnu-1699.32.7~1/RELEASE_X86_64 x86_64
```

This Works:

```bash
JFX_DIR=/Library/Java/JavaVirtualMachines/jdk1.8.0.jdk/Contents/Home/jre/lib/ext ruby samples/test_all_the_samples.rb 
```