improve setup instructions

[hiro5id]

This project is awesome and I got it working after spending a lot of time on it.

I am supplying this pull request to improve the instructions on the parts I got tripped up on:

• I selected the wrong account type in the Microsoft Azure configuration, so I made that clearer with a screenshot.
• I used the wrong redirect URI. I followed the instructions and left the index.php in the url. But when I did that I couldn't register the app, the redirect kept failing.

[codecov-io]

Codecov Report

Merging #49 (c4c0041) into master (3652ddd) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##             master     #49   +/-   ##
========================================
  Coverage      3.88%   3.88%           
  Complexity      113     113           
========================================
  Files            11      11           
  Lines           360     360           
========================================
  Hits             14      14           
  Misses          346     346           

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[hevelius]

Thanks @hiro5id