httpie 0.8.0 (new formula)

HTTPie (pronounced aych-tee-tee-pie) is a command line HTTP client. Its
goal is to make CLI interaction with web services as human-friendly as
possible.
Addressed jacknagel's comments at https://github.com/Homebrew/homebrew/pull/30353
Addressed mikemcquaid's comments at https://github.com/Homebrew/homebrew/pull/30353/files#r14122244
Removed useless code. Broken long line at 80 chars.
httpie: add 0.8.0 bottle.