Retrieve Title and Teaserimage from webpage via url

This Filter is required for the Socialwall Course Format.
The Moodle Socialwall will transform your Moodle course into a social learning platform. This includes a familiar post interface, timeline of posts, filtering of the timeline, and integration with Moodle’s activities and resources. A social learning format allows teachers to pick up the tool and begin using it right away.
This plugin is part of a set of plugins belonging to the socialwall course format https://github.com/synergylearning/moodle-format_socialwall
This is a new filter than can be turned on for the course that will convert a URL resource type http link that is added and will grab the title and a photo similar to how facebook does from the remote website to display it on the course page. If you use the course format socialwall and filter is active then:
Students may select an image and edit a description for substitution when posting a link
Teacher may select or change an image and a description for any existing mod url
A super big thank you to REMC Michigan http://remc.org for supporting and funding this project.
Special thanks to Moodle Partner Synergy Learning http://www.synergy-learning.com for doing the hard work of developing this course format.