Added ability to point the Sauce Connect gem at SC4.
Added ability to point the Sauce Connect gem at SC4.

Add the `sauce_connect_4_executable` value to your `Sauce.config` block
and the gem will resolve it and use that instead of the built in JAR.

saucelabs/sauce_ruby,angelabier1/sauce_ruby,bootstraponline/sauce_ruby,anthonywoo/sauce_ruby,bootstraponline/sauce_ruby,anthonywoo/sauce_ruby,bootstraponline/sauce_ruby,saucelabs/sauce_ruby,angelabier1/sauce_ruby,angelabier1/sauce_ruby,bootstraponline/sauce_ruby,DylanLacey/sauce_ruby,DylanLacey/sauce_ruby,angelabier1/sauce_ruby