chore: update docs

Author: stanley2058

CONTRIBUTING.md

@@ -1,26 +1,17 @@
-Contributing
-===
+# Contributing
 
-This project follows [Git-Flow](http://nvie.com/posts/a-successful-git-branching-model/), and as such has ``master`` and ``develop`` branches.
-
-## Prerequisites
-
-1. Install the appropriate [EditorConfig](http://editorconfig.org) plugin for your IDE/editor. This helps keep the code style consistent.
-2. Install [PhantomJS](http://phantomjs.org). Make sure it's on your path / available when calling `phantomjs` from the command line.
-2. `npm install -g gulp`
-3. `npm install`
+This project follows [Git-Flow](http://nvie.com/posts/a-successful-git-branching-model/), and as such has `master` and `develop` branches.
 
 ## Running the tests
 
-- All tests: `npm test`
-- Just the browser ones: `phantomjs tests/phantom.js`
-- Just the Node ones: `node tests/node.js`
+- Tests: `npm run test`
+- In browser: `npm run test:browser`
 
 ## Before creating a pull request
 
 Make sure you do the following:
 
-- Run `gulp`
+- Run `npm run build`
 
 Note: The build script will generate new `*.min.{css,js}` files. If, for example, you only changed the JavaScript then don't bother committing `emojify.min.css`.
 
@@ -31,10 +22,3 @@ Before a release, generate a commit log:
 ```
 git log --pretty=format:"- %s" >> log.md
 ```
-
-If you have rights to publish to npm, do the following first:
-
-- Run `gulp update`. This will update the project with the latest emoji from [emoji-cheat-sheet.com](http://www.emoji-cheat-sheet.com).
-- Run `gulp`
-- Run `gulp bump`
-- Run `npm publish`

README.md

@@ -4,8 +4,6 @@ Note: This fork is a rewrite version from joypixels/emojify.js with TypeScript a
 
 Below is the original README
 
-TODO: update it
-
 ---
 
 A swiss-army-knife for all emoji, in Javascript. Used by [Gitter](https://gitter.im/) and [Mapbox](https://www.mapbox.com/blog/emoji-map-markers/).
@@ -28,7 +26,7 @@ The emoji keywords are as described by [emoji-cheat-sheet.com](http://www.emoji-
 
 ### Via npm
 
-`npm install @hackmd/emojify.js  --save`
+`npm install @hackmd/emojify.js --save`
 
 ## API