fixed Instagram oauth redirect to one url
fixed test for Instagram getAuthUrl
Adjust previous fix to more independent
FOSUBUserProvider should also implement UserProviderInterface
Merge pull request #488 from stloyd/bugfix/one_url

[Bugfix] Prevent Instagram error with one possible redirect URL
Fix YahooResourceOwner `infos_url` to use new format

Refs #545.
Send authorization via headers instead of parameter
Fix revoke token for GitHub.

https://developer.github.com/v3/oauth_authorizations/#revoke-an-authorization-for-an-application

The old code did not work for me. Judging from the commit that added it i
assume it was part of a copy+paste job. According to the documentation from
GitHub to revoke a token you need to send a DELETE request. And its a one
step process.
Merge pull request #555 from stloyd/bugfix/use_header

[OAuth2] Send authorization via header instead of parameter
Merge pull request #556 from stloyd/bugfix/gh_revoke

Fix revoke token for GitHub
Merge pull request #508 from lmcd/0.3

FOSUBUserProvider should also implement UserProviderInterface
Update 1-setting_up_the_bundle.md

Add login routing
Prepare release 0.3.4
Merge branch '0.3'