Pace xmlhttprequest monitor changing content-type (v1.0.2)

[quisse]

I am using a library which makes a xhr request. When adding pace (1.0.2), the Content-Type: application/json changes to content-type:text/plain;charset=UTF-8. And the server responding to this doesn't accept this content-type and the server is not in my management.

This doesn't happen in v1.0.1

[andreabisello]

@quisse pace.js altering xmlhttprequests is making lots of problems. #261