Ability to fetch all metadata

Added ability to fetch all metadata including audio, video, twitter via passing an optional parameter to true.
By default only basic metadata will be fetched.

Auto discovery of providers and facades

Merge pull request #8 from shweshi/dev

Auto discovery of providers and facades for laravel >=5.5

Updated autoload

1.0.1

Updated composer.json

Open Graph Data

Fetch open graph data