Allow resizing of images

sample-functions/ResizeImageMagick/README.md

@@ -0,0 +1,24 @@
+## functions/resizer
+
+To resize an image with ImageMagick do the following:
+
+**Create your function on the FaaS UI or via `curl`**
+
+```
+$ curl -s --fail localhost:8080/system/functions -d '{"service": "stronghash", "image": "functions/alpine", "envProcess": "sha512sum", "network": "func_functions"}'
+```
+
+
+**Resize a picture by 50%**
+
+Now pick an image such as the included picture of Gordon and use `curl` or a tool of your choice to send the data to the function. Pipe the result into a new file like this:
+
+```
+$ curl localhost:8080/function/resizer --data-binary @gordon.png > small_gordon.png
+```
+
+**Customize the transformation**
+
+If you want to customise the transformation then edit the Dockerfile and create a new image.
+
+