Add ability to retry cURL connections if they fail (for any reason). …

[RobWiddick]

…Fixes issue #194

[RobWiddick]

PSR-2 compliant... whoops.

I will also check over v3 to help out! Thanks!

[RobWiddick]

Pull request now includes fixes for 3 other issues regarding available scopes

[RobWiddick]

I just realized that the last commit may be going into v3.. but this may be good for transitional users.

It's important to note that those new scopes won't work unless the Instagram app itself is upgraded/reviewed. It might be good to put that in the documentation somewhere.

[zack-hable]

@robertark can you please verify that this is still working? I've tried to merge your changes into my own (with added scopes, x-rate-limit fix and added subscription calls from the various other PRs on here) and with your's (even just by downloading your file) gives errors when returning comments/likes.

edit: only affects retrieving comments
stdClass Object ( [meta] => stdClass Object ( [error_type] => OAuthAccessTokenException [code] => 400 [error_message] => The access_token provided is invalid. ) )

[zack-hable]

seems this needs to be changed
public function getMediaComments($id)
{
return $this->_makeCall('media/' . $id . '/comments', true);
}