Fix tests after Traceur upgrade
Fix tests after Traceur upgrade

Two issues: Traceur now replaces all \s with /s in paths, causing tests to fail on Windows; and, Traceur has slightly different output for the code example.

beni55/es6ify,kkoehler/es6ify,thlorenz/es6ify,beni55/es6ify,kkoehler/es6ify