Add missing 'var' keyword.
Add missing 'var' keyword.

mike-suggitt/webdriverio,austek-mdsol/webdriverio,gabrielpeery/webdriverio,drptbl/webdriverio,drptbl/webdriverio,georgecrawford/webdriverio,danielgil/webdriverio,mike-suggitt/webdriverio,danielgil/webdriverio,gabrielpeery/webdriverio,georgecrawford/webdriverio,austek-mdsol/webdriverio