Add SVG asciicast (#3677)

* Add svg screencast

* Use svg screencast

README.md

@@ -19,7 +19,9 @@ npm start
 Then open [http://localhost:3000/](http://localhost:3000/) to see your app.<br>
 When you’re ready to deploy to production, create a minified bundle with `npm run build`.
 
-<img src='https://camo.githubusercontent.com/506a5a0a33aebed2bf0d24d3999af7f582b31808/687474703a2f2f692e696d6775722e636f6d2f616d794e66434e2e706e67' width='600' alt='npm start'>
+<p align='center'>
+<img src='https://cdn.rawgit.com/facebookincubator/create-react-app/6ab67e6b96457720d843aa3c557ff951a41bafc2/screencast.svg' width='600' alt=''>
+</p>
 
 ### Get Started Immediately
 

package.json

@@ -9,6 +9,7 @@
     "postinstall": "node bootstrap.js && cd packages/react-error-overlay/ && npm run build:prod",
     "publish": "tasks/release.sh",
     "start": "node packages/react-scripts/scripts/start.js",
+    "screencast": "svg-term --cast hItN7sl5yfCPTHxvFg5glhhfp --out screencast.svg --window",
     "test": "node packages/react-scripts/scripts/test.js --env=jsdom",
     "format": "prettier --trailing-comma es5 --single-quote --write 'packages/*/*.js' 'packages/*/!(node_modules)/**/*.js'",
     "precommit": "lint-staged"
@@ -19,7 +20,8 @@
     "lerna": "^2.0.0",
     "lerna-changelog": "^0.6.0",
     "lint-staged": "^3.3.1",
-    "prettier": "1.6.1"
+    "prettier": "1.6.1",
+    "svg-term-cli": "^2.0.3"
   },
   "lint-staged": {
     "*.js": [