add license information to gemspec

This way we can use it with rubygems.org API
Update Facebook's authorize URL.
Update test case for authorize url.
Merge pull request #101 from jordimassaguerpla/master

add license information to the gemspec
Merge pull request #103 from dlackty/new-endpoint

Update Facebook authorize URL to fix broken authorization
Stubs request #ssl?
Fixes image url test

On Ruby 1.8.7 the order of hash key-value pairs is
not guaranteed.
Merge pull request #105 from vesan/stub-ssl

Stubs request #ssl?
Merge pull request #106 from vesan/fixes-image-url-test

Fixes image url test
Merge remote-tracking branch 'upstream/master'