Change filenames

Docker/readme.md → docker/readme.md

 # Usage:
 Note: On some systems docker may requires super user previliges.
 1. Install [Docker](https://docs.docker.com/install/) on your host-OS.
-2. Download the `ServerWithCustomSlides`.
-3. Change the directory to this one: `cd <path/to/dir/ServerWithCustomSlides>`
-4. Put your sildes in the `servedFiles` directory.
+2. Download the `docker` directory.
+3. Change the directory to this one: `cd <path/to/dir/docker>`
+4. Put your sildes in the `served-files` directory.
 5. Run: `docker build -t decker .` to build the image.
 6. Run: `docker run -d -p 80:8888 -v "$PWD"/served-files:/served-files --name my-decker decker` to run the image in a container.