Update .text method

Related: puppeteer/puppeteer#994

examples/text.js

@@ -0,0 +1,13 @@
+'use strict'
+
+const { URL } = require('url')
+
+const createBrowserless = require('..')
+const browserless = createBrowserless()
+
+const url = new URL(process.argv[2])
+;(async () => {
+  const text = await browserless.text(url.toString())
+  console.log(text)
+  process.exit()
+})()

index.js

@@ -20,7 +20,7 @@ module.exports = launchOpts => {
     const page = await newPage()
 
     await page.goto(url, opts)
-    const text = page.plainText()
+    const text = await page.evaluate(() => document.body.innerText)
 
     page.close()
     return text