Add phpunit.prepend_cmd option

[amirHossein5]

104

[gerardroche]

Nice. This is much more flexible.

[gerardroche]

Ignore the test failures. These are due to changes in syntaxes in newer builds. I'm going to fix these now.

[codecov-commenter]

Codecov Report

Patch coverage has no change and project coverage change: -0.18 :warning:

Comparison is base (b699ef5) 46.59% compared to head (1fb5a31) 46.42%.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #105 +/- ## ========================================== - Coverage 46.59% 46.42% -0.18% ========================================== Files 1 1 Lines 543 545 +2 ========================================== Hits 253 253 - Misses 290 292 +2 ``` | [Impacted Files](https://codecov.io/gh/gerardroche/sublime-phpunit/pull/105?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Gerard+Roche) | Coverage Δ | | |---|---|---| | [plugin.py](https://codecov.io/gh/gerardroche/sublime-phpunit/pull/105?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Gerard+Roche#diff-cGx1Z2luLnB5) | `46.42% <0.00%> (-0.18%)` | :arrow_down: | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Gerard+Roche). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Gerard+Roche)

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