added readme's with rate limiting guidance

src/counter/README.md

@@ -0,0 +1,15 @@
+## Counter
+
+Effective November 2, 2020, download rate limits apply to anonymous and authenticated requests to Docker Hub from Docker Free plan accounts and are enforced by IP address.
+
+This sample pulls the following public images from Docker Hub. Please note that you may be rate limited.
+
+| Source                      | Image   |
+| -------------               |-------------|
+| src/counterService/Dockerfile       | microsoft/aspnetcore:2.0-nanoserver-1709       |
+|| microsoft/aspnetcore-build:2.0|
+| src/counterService/linux.Dockerfile | microsoft/aspnetcore:2.0|
+|| microsoft/aspnetcore-build:2.0|
+| sfvolume/counter/linux/App Resources/app.yaml    | seabreeze/azure-mesh-counter:0.5-alpine|
+
+For more details, see [Authenticate with Docker Hub](https://docs.microsoft.com/en-us/azure/container-registry/buffer-gate-public-content#authenticate-with-docker-hub).

src/helloworld/README.md

@@ -0,0 +1,12 @@
+## Hello World
+
+Effective November 2, 2020, download rate limits apply to anonymous and authenticated requests to Docker Hub from Docker Free plan accounts and are enforced by IP address.
+
+This sample pulls the following public images from Docker Hub. Please note that you may be rate limited.
+
+| Source                      | Image   |
+| -------------               |-------------|
+| linux/main/Dockerfile       | nginx       |
+| linux/sidecar/Dockerfile    | busybox:musl|
+
+For more details, see [Authenticate with Docker Hub](https://docs.microsoft.com/en-us/azure/container-registry/buffer-gate-public-content#authenticate-with-docker-hub).

src/visualobjects/README.md

@@ -0,0 +1,16 @@
+## Visual Objects
+
+Effective November 2, 2020, download rate limits apply to anonymous and authenticated requests to Docker Hub from Docker Free plan accounts and are enforced by IP address.
+
+This sample pulls the following public images from Docker Hub. Please note that you may be rate limited.
+
+| Source                      | Image   |
+| -------------               |-------------|
+| web/Dockerfile       | microsoft/aspnetcore:2.0       |
+|| microsoft/aspnetcore-build:2.0|
+| worker/Dockerfile| microsoft/dotnet:2.0-runtime|
+|| microsoft/dotnet:2.0-sdk|
+| worker/rotate.Dockerfile| microsoft/dotnet:2.0-runtime|
+|| microsoft/dotnet:2.0-sdk|
+
+For more details, see [Authenticate with Docker Hub](https://docs.microsoft.com/en-us/azure/container-registry/buffer-gate-public-content#authenticate-with-docker-hub).

src/votingapp/README.md

@@ -0,0 +1,20 @@
+## Voting App
+
+Effective November 2, 2020, download rate limits apply to anonymous and authenticated requests to Docker Hub from Docker Free plan accounts and are enforced by IP address.
+
+This sample pulls the following public images from Docker Hub. Please note that you may be rate limited.
+
+| Source                      | Image   |
+| -------------               |-------------|
+| windows/VotingApp/VotingData/Dockerfile       | microsoft/aspnetcore:2.0-nanoserver-1709       |
+|| microsoft/aspnetcore-build:2.0|
+| windows/VotingApp/VotingWeb/Dockerfile| microsoft/aspnetcore:2.0-nanoserver-1709|
+|| microsoft/aspnetcore-build:2.0|
+| linux/Dockerfile-data   | microsoft/aspnetcore:2.0|
+|| microsoft/aspnetcore-build:2.0|
+| linux/Dockerfile-web| microsoft/aspnetcore:2.0|
+|| microsoft/aspnetcore-build:2.0|
+| linux/VotingData/Dockerfile       | microsoft/aspnetcore:2.0       |
+|| microsoft/aspnetcore-build:2.0|
+
+For more details, see [Authenticate with Docker Hub](https://docs.microsoft.com/en-us/azure/container-registry/buffer-gate-public-content#authenticate-with-docker-hub).