CORS (Cross-origin resource sharing) enabled for Build Trigger API + JS example

[viktorbenei]

CORS (Cross-origin resource sharing) is now enabled for the Build Trigger API, and we also added a related (jQuery) example to our docs: Triggering and aborting builds - Bitrise Docs (PR)

Related #feature-requests :

Web API from internal server - CORS

Question on the Bitrise “start.json” API: I am calling it from our internal server (from a dev Node.js web app) and getting a Access-Control-Allow-Origin error. Is there a way I can get around?