Change the bin directory

[lenaorobei]

Preconditions

Have PHP CodeSniffer installed in the project.

Steps to reproduce

1. Require magento/magento-coding-standard
2. Run vendor/bin/phpcs -i

Expected result

1. Magento coding Standard is present in the list of installed standards.

Actual result

1. Magento coding Standard is missing in the list of installed standards.

How to Fix

Remove composer bin-dir, fix scripts to run vendor/bin/phpcs and change README.md.

[maderlock]

In addition to changing bin directory, added relative path from phpcs in vendor/bin to vendor/magento/magento-coding-standard that will be the base location phpcs needs when this repo is pulled in to a Magento 2 installation.

After this change, Magento is now included in list of installed standards both when downloaded stand-alone and as part of a Magento 2 installation.