New parser using regular expression

I have changed the parser so it now uses 1 regular expression to extract the video URL's from the HTML.

This regular expression can be changed. For example in my project i have the regular expression in a settings file on my server. If the expression has to change (because of a HTML change by YouTube) i change the regular expression on my server and the app will work again. In this way you dont have to submit a new binary to Apple and wait till its aproved. 

Note: This is my first regular expression ever, so feel free to improve it :-)