Error while running [Screenshots / test static example screenshots]: TypeError: client.url(...).waitForElementPresent(...).verify.screenshotHasNotChanged is not a function at /Users/ogupte/github/lucid/tests/screenshots.js:26:15 at arrayEach (/Users/ogupte/github/lucid/node_modules/lodash/lodash.js:522:11) at Function.forEach (/Users/ogupte/github/lucid/node_modules/lodash/lodash.js:9011:14) at Object.<anonymous> (/Users/ogupte/github/lucid/tests/screenshots.js:17:7) at HttpRequest.<anonymous> (/Users/ogupte/github/lucid/node_modules/nightwatch/lib/index.js:358:18) at emitTwo (events.js:87:13) at HttpRequest.emit (events.js:172:7) at HttpRequest.<anonymous> (/Users/ogupte/github/lucid/node_modules/nightwatch/lib/index.js:374:15) at emitThree (events.js:97:13) at HttpRequest.emit (events.js:175:7)