Update examples and CI.md

CI.md

@@ -7,3 +7,5 @@ This is a summary of the Python versions and platforms covered by the different
 | Windows  | TravisCI         | Azure Pipelines  | AppVeyor              | Azure Pipelines  |
 
 > ¹ Python version not really pinned, but dependent on the (default) version of image used.
+
+In addition additional non-x86 architectures are covered on Travis CI using Python 3.5.

examples/travis-ci-minimal.yml

@@ -4,6 +4,15 @@ jobs:
   include:
     # perform a linux build
     - services: docker
+    # perform a linux ARMv8 build
+    - services: docker
+      arch: aarch64
+    # perform a linux PPC64LE build
+    - services: docker
+      arch: ppc64le
+    # perform a linux S390X build
+    - services: docker
+      arch: s390x
     # and a mac build
     - os: osx
       language: shell