Add a question about HLS to FAQ.
Add a question about HLS to FAQ.

We've been getting quite a few questions regarding HLS content
problems. Most of them boil down to browsers not supporting TS
segments. This CL adds a Q&A about it ti our FAQ.

Change-Id: I7d5aa1c1a400df125880a6f8609d8b990bd33ad4

brightcove/shaka-player,brightcove/shaka-player,brightcove/shaka-player