test(api): Verify number of requests when interceptors attached
test(api): Verify number of requests when interceptors attached

Should not duplicate any requests

Issue #27

gund/ng-http-interceptor,gund/ng2-http-interceptor,gund/ng2-http-interceptor,gund/ng-http-interceptor,gund/ng2-http-interceptor,gund/ng-http-interceptor