Review of 'Overview' documentation section

[lapetina9]

What current issue(s) does this address, or what feature is it adding? Current documentation is not very user friendly

How did you solve this problem? I reviewed it with @lock9, changed some texts and fixed one broken link.

How did you make sure your solution works? I have little background in this area, I tried to make it more simple for starters (with @lock9 help).

Are there any special changes in the code that we should be aware of? No

Please check the following, if applicable:

• [ ] Did you add any tests?
• [ ] Did you run make lint?
• [ ] Did you run make test?
• [ ] Are you making a PR to a feature branch or development rather than master?
• [ ] Did you add an entry to CHANGELOG.rst? (if not, please do)

How can I add it to changelog? Should I create a new version?

[coveralls]

Coverage remained the same at 85.313% when pulling 3c1c727df7eda050d6c86c840c7867170de26063 on lapetina9:review-overview into 5fe7d51ef14614ff1cd0681f8fe2cb3e2cb76557 on CityOfZion:master.

[lapetina9]

Hi @ixje, I've made the changes you've requested. Let me know if you'd like to add or update anything else. Thanks!

[ixje]

Thank you for your contribution 👍