Skip LatexToUnicodeProcessorTest if pandoc is not found

[arandilopez]

Hi. This PR resolves #68 by marking the test as incomplete is pandoc command is not found on the system. Other tests pass but this 3 tests get marked as skiped and php prints a warning about it with the text: 'Pandoc is not found, skiping this test'

[codecov]

Codecov Report

Merging #72 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master      #72   +/-   ##
=========================================
  Coverage     90.38%   90.38%           
  Complexity      175      175           
=========================================
  Files             9        9           
  Lines           468      468           
=========================================
  Hits            423      423           
  Misses           45       45

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[renanbr]

Nice, I'll check this soon

[renanbr]

Thank you,

I would prefer to mimic the Pandoc class check, run exec('which pandoc', $output, $returnVar);, then check $returnVar like in Pandoc class

Could you make this change before I merge it?

[arandilopez]

@renanbr

Sure, I'll make the change

[renanbr]

thank you @arandilopez
merged as 1edf152 (i just squashed before merge 😉)