chore: Use Typescript to lint JSDoc annotations (#986)

This patch starts using typescript to lint JSDoc annotations.

Note: this uses typescript's bleeding edge. We should migrate to stable once
it has all the necessary bugfixes.

References #65.

lib/Puppeteer.js

@@ -19,15 +19,15 @@ const Launcher = require('./Launcher');
 class Puppeteer {
   /**
    * @param {!Object=} options
-   * @return {!Promise<!Browser>}
+   * @return {!Promise<!Puppeteer.Browser>}
    */
   static launch(options) {
     return Launcher.launch(options);
   }
 
   /**
-   * @param {string} options
-   * @return {!Promise<!Browser>}
+   * @param {{browserWSEndpoint: string, ignoreHTTPSErrors: boolean}} options
+   * @return {!Promise<!Puppeteer.Browser>}
    */
   static connect(options) {
     return Launcher.connect(options);