W3 Total Cache Fixes + Composer

Original code by W3 Total Cache by @ftownes Forked from https://github.com/szepeviktor/fix-w3tc

Installation

1. Deactivate official plugin from WP.org
2. Delete plugin directory w3-total-cache by hand, DO NOT click "Delete" on Plugins page
3. Add package to composer.json (TBD)
4. Activate w3tc-composer

Changes

• See https://github.com/szepeviktor/fix-w3tc/blob/master/README.md
• Adds composer.json