Updated the client to the current version

[Bebup]

The Instagram API have changed a bit in the lasts months and I have updated this to accept those changes.

IT MIGHT NOT WORK ON OLD INSTAGRAM APPS

Changes

• Updated API URL (now it uses graph)
• Accept a configurable parameter scope
• Accept a configurable parameter fields

[chuprik]

wow! thanks!

@nismangulov we must check it and merge :)

[undsoft]

FYI without this PR, this extension is not really working. You'll just get Invalid scope error from Instagram because necessary fields are missing.