Merge branch 'master' into webvr

Author: saschanaz

.paket/paket.bootstrapper.exe

@@ -1,6 +1,5 @@
 # TypeScript and JavaScript lib generator
 
-AppVeyor Status: [![Build status](https://ci.appveyor.com/api/projects/status/8oj3j7u6nvag1xvu/branch/master?svg=true)](https://ci.appveyor.com/project/zhengbli/tsjs-lib-generator/branch/master)
 Travis CI Status: [![Build Status](https://travis-ci.org/Microsoft/TSJS-lib-generator.svg?branch=master)](https://travis-ci.org/Microsoft/TSJS-lib-generator)
 
 This tool is used to generate `dom.generated.d.ts`, `webworker.generated.d.ts` and `dom.iterable.generated.d.ts` for TypeScript.
@@ -67,13 +66,14 @@ A "Living Standard" ([example](https://xhr.spec.whatwg.org/)) should be added he
 ## Code Structure
 
 - `src/index.ts`: handles the emitting of the `.d.ts` files.
-- `src/test.ts`: verifies the otuput by comparing the `generated/` and `baseline/` contents.
+- `src/test.ts`: verifies the output by comparing the `generated/` and `baseline/` contents.
 
 
 ## Input Files
 
 - `browser.webidl.preprocessed.json`: a JSON file generated by Microsoft Edge. **Do not edit this file**.
     - Due to the different update schedules between Edge and TypeScript, this may not be the most up-to-date version of the spec.
+- `mdn/apiDescriptions.json`: a JSON file generated by fetching API descriptions from [MDN](https://developer.mozilla.org/en-US/docs/Web/API). **Do not edit this file**.
 - `addedTypes.json`: types that should exist in either browser or webworker but are missing from the Edge spec. The format of the file mimics that of `browser.webidl.preprocessed.json`.
 - `overridingTypes.json`: types that are defined in the spec file but has a better or more up-to-date definitions in the json files.
 - `removedTypes.json`: types that are defined in the spec file but should be removed.