Updates to sections "Overview" and "The Idea" in README.md

**Documentation Type**

- [ ] New Feature
- [ x ] Fix current documentation (errors)

**Background**
Explain the need for new documentation. What problem does it solve?
Better reach all audiences.

**Suggested Solution**
Explain the proposed documentation update
Update the sections *Overview* and *The Idea* in README.md.

**Screenshots**
Include screenshots of current documentation/ errors in following documentation if applicable
N/A

**Acceptance Criteria**
Provide requirements to test that the documentation is correct
N/A