IE7 needs some help with JSON
lib/wd is not loaded on the client - remove JSON dep
lib/ClientSuite doesn't need help with JSON
Add the ability to pass a function to execute() and have it translated to a string for consumption by WebDriver.
Fixes #14.
Merge branch 'ie7-must-die' of https://github.com/neonstalwart/dojo2-teststack into geezer
Fixes #20.