Adds the ability to set the max depth from the composer.json file

[Potherca]

Proposed Changes

This MR add the ability to set the max-depth of the finder from the "extra" section of the composer.json file.

Key

The name of the key is phpcodesniffer-max-depth. This can be changed if a better suggestion is made.

Value

The value has the constraint that:

• It MUST be an integer (not a numeric string)
• Not smaller or equal to the minimum level (which is 0 or 1 depending on the version of PHPCS installed)
• Not so large it is converter to scientific notation (which registers as a float) as this triggers an exception from the Finder class.

If the constraint is not met an exception is thrown informing the user.

Related Issues

Fixes #45

[frenck]

Looks good 👍
Missing docs...?

[frenck]

@Potherca Should we move forward with this?

[frenck]

Rebased.

[frenck]

Changed it a little @Potherca...
Tested, documented and ready for merge -> I'll go ahead.