I just saw it too and I really liked it. I know nothing about the comics, so I don't know whether anything was different from the comics. I have always loved reading about fighter pilots, so she might be my new favorite. She seems like the most down to Earth superhero so far.
I saw it on a plane last weekend and fell hard asleep around the middle. I fast forwarded to the end after waking up just to see ow it ended. It was ok, like a two part Agents of Shield season finale. Still havent seen the latest avengers yet and have sucesfully avoided most spoilers. I am looking forward to see how CM fits into the movie.