Standalone decompressor for browsers about brotli.js

[ArthurZhou123]

I also got an error in use compress.js. And I built this compress.js with your steps.

Uncaught TypeError: Cannot read property 'slice' of null
    at encode.js:11
    at Object.<anonymous> (encode.js:11)
    at Object../node_modules/brotli/build/encode.js (encode.js:56)
    at __webpack_require__ (bootstrap:784)
    at fn (bootstrap:150)
    at Object../node_modules/brotli/compress.js (compress.js:1)
    at __webpack_require__ (bootstrap:784)
    at fn (bootstrap:150)
    at Object../node_modules/brotli/index.js (index.js:1)
    at __webpack_require__ (bootstrap:784)
    at fn (bootstrap:150)
    at Module../src/actions/appActions.js (role-resource-constants.js:91)