Generate RSS feeds during deployment (jestjs#2769)

* Generate RSS feeds during deployment.
Remove redundant gitignore entries.
Updated autogenerated README

* Make sure blog directory exists before generating feeds

.gitignore

@@ -22,7 +22,4 @@ npm-debug.log
 coverage
 lerna-debug.log
 npm-debug.log*
-website/core/metadata*.js
-website/src/jest/blog
-website/src/jest/docs
 /danger/node_modules/

README.md

@@ -90,7 +90,7 @@ Jest can be used in projects that use [webpack](https://webpack.github.io/) to m
 To use TypeScript in your tests, install the `ts-jest` package:
 
 ```
-npm install --save-dev test-jest
+npm install --save-dev ts-jest
 ```
 
 then modify your `package.json` so the `jest` section looks something like:

website/server/generate.js

@@ -3,6 +3,7 @@ const glob = require('glob');
 const fs = require('fs.extra');
 const mkdirp = require('mkdirp');
 const server = require('./server.js');
+const feed = require('./feed');
 
 // Sadly, our setup fatals when doing multiple concurrent requests
 // I don't have the time to dig into why, it's easier to just serialize
@@ -31,6 +32,14 @@ const queue = (function() {
   return {push};
 })();
 
+queue.push(cb => {
+  mkdirp.sync('build/jest/blog/');
+  fs.writeFileSync('build/jest/blog/feed.xml', feed('rss'));
+  fs.writeFileSync('build/jest/blog/atom.xml', feed('atom'));
+  console.log('Generated RSS feed');
+  cb();
+});
+
 glob('src/**/*.*', (er, files) => {
   files.forEach(file => {
     let targetFile = file.replace(/^src/, 'build');
@@ -53,6 +62,7 @@ glob('src/**/*.*', (er, files) => {
   });
 
   queue.push(cb => {
+    console.log('Generated website');
     server.close();
     cb();
   });