update readme to include header search path

[jaredh159]

Thanks for the component!

Got an error building in Xcode, dug through the closed issues, and found #15. That was merged, but at some point the instructions seemed to have vanished from the readme (maybe a force-push at some point?). Anyway, this restores the section about adding a search path.

[codecov]

Codecov Report

Merging #38 (46ff86a) into master (dacacd8) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master       #38   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            1         1           
  Lines           18        18           
  Branches         4         4           
=========================================
  Hits            18        18           

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[jaredh159]

You know... I was having Xcode build errors, but I also realized I put my AppDelegate.m import in a bad spot (within an #ifdef) so maybe that was my issue, and these instructions were removed intentionally? Sorry if that's the case, feel free to close, obviously. Haven't tested if it would build without the header search path yet...

[jaredh159]

Ack, just tested and sure enough, my problem was not the search path, it was the #ifdef. Sorry for the noise, closing.

[isilher]

@jaredh159 thank you for posting this, I made the same mistake and your explanation probably saved me quite some time and frustration 👍