🚑 Moves loadInstalledPaths from init to onDependenciesChangedEvent (#51)

* Move loadInstalledPaths from init to onDependenciesChangedEvent

* Use versioned release of sensiolabs/security-checker for PHP 5 compatibility

src/Plugin.php

@@ -117,8 +117,6 @@ private function init()
 
         $this->processBuilder = new ProcessBuilder();
         $this->processBuilder->setPrefix($this->composer->getConfig()->get('bin-dir') . DIRECTORY_SEPARATOR . 'phpcs');
-
-        $this->loadInstalledPaths();
     }
 
     /**
@@ -154,6 +152,7 @@ public function onDependenciesChangedEvent()
         }
 
         if ($this->isPHPCodeSnifferInstalled() === true) {
+            $this->loadInstalledPaths();
             $installPathCleaned = $this->cleanInstalledPaths();
             $installPathUpdated = $this->updateInstalledPaths();