### changes
#### remove trailing spaces
When I was using example I noticed trailing spaces.
So, this PR removes the trailing spaces of json file, README, and others.
`examples/with-jest-typescript/src/modules/cars/Overview.tsx` also has it, but this time it did not change as tslint error occurs at commit.
Pulling out a few core points from the readme...
This example builds from /src into /dist, managing the different expectations of express.js (es5, commonjs) and next.js (es6) by using a pair of tsconfig.json files, both of which are run by `npm run build-ts` or any of the other npm targets.
Hot module reloading is largely but not completely wired up (nodemon is watching /dist but tsc isn't set up to watch /src and transpile changes in /src to /dist automatically (that's mainly because I wasn't sure how to start both nodemon and a pair of tsc watchers and be confident all would get shut down when the user killed dev mode). The readme suggests running `npm run build-ts` manually in another window to push changes from /src into /dev and on into the browser.
tslint is also wired up via `npm run tslint`
