Improvement: "Bubble" error message for query

Took me a good while to figure out that I was getting an "Authorization failed"

Author: andreasanta

src/InfluxDB/Client.php

@@ -193,7 +193,7 @@ public function query($database, $query, $parameters = [])
             return $driver->query();
 
         } catch (\Exception $e) {
-            throw new Exception('Query has failed', $e->getCode(), $e);
+            throw new Exception('Query has failed: ' . $e->getMessage(), $e->getCode(), $e);
         }
     }