Merge overriding headers from ActiveRestClient into default headers.
Merge pull request #29 from zbelzer/preserve_faraday_headers

Merge overriding headers from ActiveRestClient into default headers.
Bump to 0.9.71 after pull request for correctly merging overriden headers
Use Faraday's url builder for urls in exceptions.
Merge pull request #30 from zbelzer/raise_execptions_with_proper_paths

Use Faraday's url builder for urls in exceptions.
Merge branch 'master' of github.com:whichdigital/active-rest-client