README Needs to be updated with July lessons

[Stargator]

@nak411 @jsambuo

The README doesn't have the fourth lesson from July.

Also, I would recommend at the end of each lesson you note whether the builds should be passing in Circle CI

[jsambuo]

Thanks @Stargator,
We've been neglecting this repo and CircleCI a bit, been busy with work, but we'll try to update this when we can. Thanks for bringing it up!

[Stargator]

Thanks @jsambuo . I missed last week's meeting, so an updated repo would help keep me on track.