The envsync from bmitch

Fix PHPMD issues

$ vendor/bin/phpmd src text codesize,unusedcode,naming

/home/travis/build/bmitch/envsync/src/SyncerCommand.php:18  The method handle() has an NPath complexity of 1252. The configured NPath complexity threshold is 200.
/home/travis/build/bmitch/envsync/src/SyncerCommand.php:28  Avoid unused local variables such as '$index'.
/home/travis/build/bmitch/envsync/src/SyncerCommand.php:46  Avoid unused local variables such as '$tableData'.

Put together example repo with how to use.

Setup travis ci

Make framework agnostic and not require line in providers array

@Exadra37 pointed out that ti would be best to have this not require any line in the service providers array.

See if I can make this run from vendor/bin like PHPUnit or PHPMD does. Thay way can also be framework agnostic.

checkForCiBuild and checkForDeploy very similar

In SyncerCommand these two methods are very similar.

Could probably be turned into one method or a separate class?

Expand command to 3 modes

Check that any env variables defined in the source code are also defined in the .env.example. If not, then exit with 1 so it fails in a CI build.
Check that any env variables defined in the source code are defined in the .env file.
Default version where it just shows a report of variables in source, in env file and in .example.
- Maybe also show their value?

Fix PHPCS errors

FILE: /home/travis/build/bmitch/envsync/src/SyncerCommand.php
----------------------------------------------------------------------
FOUND 12 ERRORS AFFECTING 9 LINES
----------------------------------------------------------------------
 24 | ERROR | [x] Space before opening parenthesis of function call
    |       |     prohibited
 24 | ERROR | [x] Space before opening parenthesis of function call
    |       |     prohibited
 25 | ERROR | [x] Space before opening parenthesis of function call
    |       |     prohibited
 25 | ERROR | [x] Space before opening parenthesis of function call
    |       |     prohibited
 34 | ERROR | [x] Blank line found at end of control structure
 55 | ERROR | [x] Function closing brace must go on the next line
    |       |     following the body; found 3 blank lines before
    |       |     brace
 61 | ERROR | [x] Whitespace found at end of line
 63 | ERROR | [x] Blank line found at start of control structure
 65 | ERROR | [x] Expected 1 space after closing parenthesis; found 0
 65 | ERROR | [x] Whitespace found at end of line
 72 | ERROR | [x] Whitespace found at end of line
 73 | ERROR | [x] Blank line found at end of control structure
----------------------------------------------------------------------
PHPCBF CAN FIX THE 12 MARKED SNIFF VIOLATIONS AUTOMATICALLY
----------------------------------------------------------------------