Version 1.5.0 Update

<h2>Version 1.5.0 Changelog</h2>

* Switched to using a nonce to validate form submissions that support WordPress Zero Spam
* Added Zero Spam plugin settings page for advanced control
* Fix for for non-logged in users (https://github.com/bmarshall511/wordpress-zero-spam/pull/27, thanks @afragen)
* Added blank index.php files to prevent directory browsing (https://github.com/bmarshall511/wordpress-zero-spam/pull/24, thanks @TangRufus)
* Added uninstall.php (https://github.com/bmarshall511/wordpress-zero-spam/pull/23, thanks @TangRufus)
* Addded support for GitHub Updater plugin (https://github.com/bmarshall511/wordpress-zero-spam/pull/21, thanks @afragen)
* Added support for Contact Form 7 form submissions (https://github.com/bmarshall511/wordpress-zero-spam/pull/26, thanks @leewillis77)
* Added ability to log spam detections
* Fix for warnings cause by default settings not being set before actions run (https://github.com/bmarshall511/wordpress-zero-spam/pull/31, thanks @leewillis77)
* Installed Compass (http://compass-style.org/)
* Added support for Gravity Forms
* Fixed potential issue with sites that use caching plugins
* Fixed minor typos (thnaks @macbookandrew)