Added information on ES5 vs ES6+

[thkruz]

As promised, took a stab at doing a pull request properly.

Just included a short summary of the discussion on ES5 vs ES6+ and why satellite.min.js isn't shown on the github page.

[coveralls]

Coverage remained the same at 82.662% when pulling ea28d25 on thkruz:update-readme into 4626ff5 on shashwatak:develop.

[davidcalhoun]

Thanks for adding this clarification! I think some of the confusion is from folks who are no so familiar with npm. There is actually a missing step as well: running npm run build, which will output the /dist directory.

I checked out package.json and just saw a build that runs with prepublishOnly. An alternate solution: if this is changed to prepare, it will also run on npm install: https://docs.npmjs.com/cli/v6/using-npm/scripts, so folks wouldn't need to manually run npm run build.

EDIT: My bad, the readme has a Building section that explains how to build!

[ezze]

@thkruz Thanks a lot, mate!

@davidcalhoun Nice catch! We should consider to change prepublishOnly to prepare for those who are eager for old school approach without npm.

[thkruz]

Thanks for adding this clarification! I think some of the confusion is from folks who are no so familiar with npm.

@davidcalhoun 100% was my issue. Spent the last few days learning/implementing it after @ezze's explanation and now it all makes perfect sense.