Update readme/docs for 3.0.0

[HunterMcGushion]

• Changes to the README required for 3.0.0 are being held here until its release so the repo's home page remains consistent with the current non-pre-release version (2.2.0)

[codecov[bot]]

Codecov Report

Merging #151 into release/3-0-0 will not change coverage. The diff coverage is n/a.

@@              Coverage Diff               @@
##           release/3-0-0     #151   +/-   ##
==============================================
  Coverage          94.07%   94.07%           
==============================================
  Files                 46       46           
  Lines               4961     4961           
==============================================
  Hits                4667     4667           
  Misses               294      294

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 7ed3f49...1529313. Read the comment docs.

[coveralls]

Pull Request Test Coverage Report for Build 772

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 94.074%

---

Totals
Change from base Build 769:	0.0%
Covered Lines:	4667
Relevant Lines:	4961

---

💛 - Coveralls