Replace logging interface

Author: eblount

.gitignore

@@ -1,3 +1,4 @@
 composer.phar
 composer.lock
 vendor
+.idea

src/Notifications/Notifier.php

@@ -4,7 +4,7 @@
 
 use EricMakesStuff\ServerMonitor\Monitors\HttpPingMonitor;
 use EricMakesStuff\ServerMonitor\Monitors\SSLCertificateMonitor;
-use Illuminate\Contracts\Logging\Log as LogContract;
+use Psr\Log\LoggerInterface as LogContract;
 use EricMakesStuff\ServerMonitor\Monitors\DiskUsageMonitor;
 use Exception;