Add CancellationToken to OnIntercepted (justeattakeaway#144)

* Add CancellationToken to OnIntercepted

* Some feedback

* LF

* More feedback work

* .gitattributes text=auto

* Add a couple of tests

* More feedback

* Add another test

* Missing type arg

Merge pull request justeattakeaway#126 from justeat/dependabot/nuget/…

…ReportGenerator-4.2.12

Bump ReportGenerator from 4.2.11 to 4.2.12

Merge pull request justeattakeaway#84 from martincostello/Fix-Content…

…-Type-For-Bundles

Fix content-type for bundles

Merge pull request justeattakeaway#79 from martincostello/Update-Docs

Update docs

Merge pull request justeattakeaway#76 from martincostello/Schema-Tidy-Up

Schema tidy-up

Merge pull request justeattakeaway#54 from martincostello/Update-NuGe…

…t-Key

Update NuGet key

Merge pull request justeattakeaway#25 from martincostello/Fix-Port-Ha…

…ndling

Fix default port handling

Merge pull request justeattakeaway#21 from martincostello/Support-Mat…

…ching-Any-Host

Support matching any host and providing fallback responses

Merge pull request justeattakeaway#18 from martincostello/Test-On-macOS

Test for Linux and OS X in Travis CI

Workaround AppVeyor publish issue

Work around issue with publishing NuGet packages from AppVeyor.
See http://help.appveyor.com/discussions/problems/8215-cannot-publish-to-nuget-get-400-bad-request-error