Update FormDumperGenerator.php

after executing this
php artisan generate:form tweet > app/views/home.blade.php

I got error
[ErrorException]
  Notice: Undefined variable: form in /Users/my/Sites/l4/vendor/way/
  generators/src/Way/Generators/Generators/FormDumperGenerator.php line 188

And come width simple fix tray it out
Merge pull request #60 from senei/master

Form generator simple fix