bug #577 Make Migration - Fix db/shard options value forward (cvergne)

This PR was merged into the 1.0-dev branch.

Discussion
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Make Migration - Fix db/shard options value forward

Hi,

A very small fix noticed when playing a little with the `make:migration` command :)

Commits
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568b098 Make Migration - Fix db/shard options value forward

Author: weaverryan

src/Maker/MakeMigration.php

@@ -67,13 +67,13 @@ public function generate(InputInterface $input, ConsoleStyle $io, Generator $gen
     {
         $options = ['doctrine:migrations:diff'];
         if (null !== $input->getOption('db')) {
-            $options[] = '--db'.$input->getOption('db');
+            $options[] = '--db='.$input->getOption('db');
         }
         if (null !== $input->getOption('em')) {
             $options[] = '--em='.$input->getOption('em');
         }
         if (null !== $input->getOption('shard')) {
-            $options[] = '--shard'.$input->getOption('shard');
+            $options[] = '--shard='.$input->getOption('shard');
         }
 
         $generateMigrationCommand = $this->application->find('doctrine:migrations:diff');