Cleanup of README file

[shaido987]

The README.md file has some (minor) grammatical and punctuation issues that interrupt the reading flow. Some examples:

• Missing punctuation (lines, 57, 200, 202, etc.)
• Unnecessary capitalized words (lines 73, 91, etc.)
• Additional spaces around commas (e.g., line 96)
• NumPy, SciPy and Pandas should be properly capitalized as they are names.

For the Python example code in the README, PEP8 recommends not using spaces around the = sign when used to indicate keyword arguments.

The above are all very minor and low priority issues but fixing them can be done without any large effort.

[antoinecarme]

@shaido987

Thanks a lot. These changes are of course valuable for PyAF users.

I will review the pull request.

[antoinecarme]

Related pull request :

#173

[antoinecarme]

@shaido987

I assigned this issue to you. Up to you to close it.

[shaido987]

@antoinecarme

Sure, I will close it for now as the PR is merged. If there is anything more in the future I will open up a new issue.

[antoinecarme]

Perfect!! Thanks a lot.