fixed bug with invalid urls
[SD-1457] [trello-346] reviewed - comments added
mediaextractor test added
increment version to 1.2.2
version in readme.md updated
testfolder moved
fixed bug with not correct urls and data in src attribut, new tests
test for embedurl on videos
[trello-346] [SD-1457] - reviewed, test added, failing, review not
passed
changed test for image extraction