Fixed return types in Redirect class

Signed-off-by: Daniel Bondergaard <danielboendergaard@gmail.com>
Added FormBuilder tests

Signed-off-by: und1f <bash88@gmail.com>
Merge pull request #787 from danielboendergaard/docblock-updates

Fixed return types in Redirect class
Merge pull request #789 from und1f/master

Added FormBuilder tests
Merge pull request #2 from laravel/master

Updated