Can't pass array into flashOnly and flashExcept

If you pass an array into `flashOnly` or `flashExcept` like in other methods by the time it gets to `only` or `except` we have `[0 => ['email', 'name']]` etc. 
Use path.public to set 'public' folder location
added save method to morph one or many.
fix grouping on routes.
add an environment method to app.
update readme.
added a resolving callback to ioc container.
update readme.
update php version requirement for now.
Merge pull request #313 from iyoworks/patch-1

Updated ServeCommand to use path.public
Merge pull request #285 from Robbo-/patch-2

Can't pass array into flashOnly and flashExcept of the Request class
use array_get in validator.
Merge branch 'master' of github.com:laravel/framework
Fix resource routing for `/a/b/{id}/edit` (fixes #332)