add update.sh

l10n/update.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+git checkout l10n_master
+git reset --hard HEAD~200
+git pull origin l10n_master
+git rebase master
+git reset --soft master
+git commit -m "new translations from crowdin"
+git checkout master
+echo "ready to merge l10n_master"