Support hosting spec when using actix-web

[wafflespeanut]

Schedule: 0.2.1 (follow the project to see the relevant issues).
Relevant discussion: actix/actix-web#310

[wafflespeanut]

Hey @ivanceras, I've been working on an attempt at hosting swagger spec through actix-web and it looks promising. I recall you saying that you were playing with syn and stuff for that feature. Would you be willing to give feedback at my attempt? (The test is all I have atm, but you get the idea).

[ivanceras]

Hi @wafflespeanut , you beat me to it. My progress has been very slow, I was struggling with the syn parser trying to get pass the visitor pattern. My code was trying to handle all use-case in the match expression and has been very tedious, and seemed to be a wrong approach.
I'll definitely take a look at this actix-web plugin.

[wafflespeanut]

@ivanceras Hah okay. And yes, please do take a look and let me know! :)