In the interest of making the app more "mainstream" (I got feedback that it's a bit too geeky to have mass appeal, at least as far as the default channels go ["programming", "science"...]).

Improvements:

- Now you have enough channels out of the box, so there is no need to learn vi to add those channels manually. If you are upgrading delete ~/.qreddit to get those default channels instead of your old stuff.

- More popular channels added ("sports", "news", "music" and other stuff appreciated by wider audience).

- Option to enable NSFW ( "adult" / pornographic ) channels. It will have a better age verification later, now it just goes ahead and enables it.