Twitter App Ready

[guacamoli]

Please review @timothy1ee @thecodepath

[timothy1ee]

Sahil, excellent work on this homework, nice job tackling all the optionals. Hopefully, things with iOS are starting to come together for you. In the feedback below, I go through a checklist, and if things look good, I'll mention it to let you know you're on the right track, or I'll provide some feedback.

• Models look good, good use of stored and computed properties. If you want to support deep copying, you should check out the NSCopying protocol.
• TwitterClient and models look good. In production, there would be more validation to be robust to unexpected values, but in this homework it was fine to assume a well behaved API.
• You should move your assets to Images.xcassets.
• TweetCell looks good, good use of property observers, you can make the view properties private for more encapsulation. Nice job adjusting the Auto Layout constraint constants, although it'd be nice to reduce that to a minimum number.
• Good job with infinite loading, but be sure to check for in-flight loading requests, otherwise, you're going to stack up the requests.
• Nice job with the custom protocols.
• You have some warnings, but in general Auto Layout constraints look good.