allow to disable backups

Service/PhraseApp.php

@@ -89,6 +89,11 @@ class PhraseApp implements LoggerAwareInterface
      */
     private $fileMerger;
 
+    /**
+     * @var bool
+     */
+    private $backup = true;
+
     /**
      * @param PhraseAppClient          $client
      * @param TranslationLoader        $translationLoader
@@ -144,6 +149,18 @@ public function setOutputFormat($outputFormat)
         return $this;
     }
 
+    /**
+     * @param boolean $backup
+     *
+     * @return PhraseApp
+     */
+    public function setBackup($backup)
+    {
+        $this->backup = $backup;
+
+        return $this;
+    }
+
     /**
      * Get Locales
      *
@@ -258,6 +275,11 @@ protected function dumpMessages($targetLocale)
         }
 
         $this->logger->notice('Writing translation file for locale "{locale}".', ['locale' => $targetLocale]);
+
+        if (false === $this->backup) {
+            $this->translationWriter->disableBackup();
+        }
+
         $this->translationWriter->writeTranslations($extractedCatalogue, $this->outputFormat, ['path' => $this->translationsPath]);
     }