Fixed conflicting PDF facade namespace and corrected php version

Updated composer to have the correct config to install dependancies that
work for 7.0

app/Exceptions/Handler.php

@@ -26,10 +26,10 @@ class Handler extends ExceptionHandler
 
     /**
      * Report or log an exception.
-     *
      * This is a great spot to send exceptions to Sentry, Bugsnag, etc.
      *
      * @param  \Exception $e
+     * @return mixed
      */
     public function report(Exception $e)
     {