I recently purchased one for the same thing: web dev, travel, and iOS development too. I had a 2014 MacBook Pro Retina that was stolen and decided to "downgrade" for the replacement. I'm honestly really happily surprised with the little silver box. Its paper thin, the keyboard is really nice after you get used to it (takes a few days). The battery lasts seemingly forever and it runs really smoothly.

Compared to my MBPR it feels just as fast if not occasionally faster. However, streaming video to the TV over airplay hasn't been as nice. If you do video heavy things like gaming or video production, its not for you. But as a programmer, I'm really, really happy.

Note: I would recommend the 1.2 GHz configuration or the 1.3 - I have the 1.2 and a lot the the reviews are saying that there is a noticeable difference between the 1.1 and 1.2 in terms of computing power.

Edit: fixed spelling and grammar.