fix meta header
set undefined repo and org when outside of a git directory
add docblock just to pretty autocomplete inside class
plug warning for passing options repo and org if executed outside
Merge pull request #237 from cordoval/237-friendlier-messages

merge #237 Friendlier messages (cordoval)

This PR was merged into gushphp:master branch.

Discussion
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When executing gush on a directory that is not a git repository we get a PHP Fatal error as result:

`PHP Fatal error:  Uncaught exception 'RuntimeException' with message 'fatal: Not a git repository (or any of the parent directories): .git' in phar:///usr/local/bin/gush/src/Helper/ProcessHelper.php:81`

I find a better approach would be to simply show a message like "Gush works only inside a git repository."

Commits
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99b204b0053aa4fff31788d711647a9d92683914 fix meta header (cordoval)
953f64e364687d627ee689c6627d7266645e8d4b set undefined repo and org when outside of a git directory (cordoval)
58e77eca46f03712bc21eed0d681b3f7cf76d24f add docblock just to pretty autocomplete inside class (cordoval)
6d9f179d8522965db7a0bec154d5b68794957c76 plug warning for passing options repo and org if executed outside (cordoval)