Add e2e docs

e2e/README.md

@@ -0,0 +1,35 @@
+# podinfo end-to-end testing
+
+The e2e testing infrastructure is powered by CircleCI and [Kubernetes Kind](https://github.com/kubernetes-sigs/kind).
+
+### CI workflow
+
+* download go modules
+* run unit tests
+* build container
+* install kubectl, helm and Kubernetes Kind CLIs
+* create local Kubernetes cluster with kind
+* deploy Tiller on the local cluster
+* load podinfo image onto the local cluster
+* deploy podinfo with Helm
+* run Helm tests
+
+```yaml
+jobs:
+  e2e-kubernetes:
+    machine: true
+    steps:
+      - checkout
+      - run:
+          name: Build podinfo container
+          command: e2e/build.sh
+      - run:
+          name: Start Kubernetes Kind cluster
+          command: e2e/bootstrap.sh
+      - run:
+          name: Install podinfo with Helm
+          command: e2e/install.sh
+      - run:
+          name: Run Helm tests
+          command: e2e/test.sh
+```