Fix few typos in setup.py

[evemorgen]

Hi folks!

After poking around this lib in Pypi.org, I found out that "homepage" link leads to Kubernetes python client gh page. This PR fixes that issue.

Changes:

• supplemented module description with "asynchronous" keyword
• make url lead to right repo

Take care
Patryk

[codecov-io]

Codecov Report

Merging #18 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #18   +/-   ##
=======================================
  Coverage   92.53%   92.53%           
=======================================
  Files          14       14           
  Lines         898      898           
=======================================
  Hits          831      831           
  Misses         67       67

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[tomplus]

Hi Patryk, many thanks for your contribution!