refactor: inclusion in prototype services readme (#272)

* refactor: adding the prototype services to the readme

* Update README.md

added instructions on how to use docker-compose

Co-authored-by: Raphael Flechtner <39338561+flechtnergalani@users.noreply.github.com>

README.md

@@ -5,30 +5,36 @@
 The KILT demo client demonstrates the functionality of the KILT SDK and acts as a playground for KILT use cases.
 
 ## Installation for local development
-To use the demo client locally, you have to install all dependencies with yarn.
+Because the demo client will try to connect to our [prototype services](https://github.com/KILTprotocol/prototype-services) and [mashnet-node](https://github.com/KILTprotocol/mashnet-node), we recommend spinning up the whole stack using `docker-compose` (see below).
+
+To run the demo client natively, you have to install all dependencies with yarn.
 ```
 yarn install
 ```
-
-## Run
-To build it and launch a dev server, run
+Then start a develop build with
 ```
 yarn start
 ```
+The client can now be accessed with a browser on http://localhost:3000.
+
+Follow the setup steps from our [prototype services](https://github.com/KILTprotocol/prototype-services) and [mashnet-node](https://github.com/KILTprotocol/mashnet-node) to get these running.
 
 ## Run in docker container
 
-### Build docker image
+Use docker-compose to build and run the demo client and its dependencies (prototype services and mashnet node) in a set of docker containers.
 ```
-docker build -t kilt/prototype-client .
+docker-compose up demo-client
 ```
-
-### Run docker image
+Again, the client is now available on http://localhost:3000.
+Stop and remove all containers (resetting state) with 
 ```
-docker run -p 80:80 kilt/prototype-client   
+docker-compose down -v
+```
+The `src` directory will be mounted to the demo-client's container, which applys all changes on save.
+If you make changes that require reinstalling dependencies, rebuild the images with
+```
+docker-compose up --build demo-client
 ```
-The client can now be accessed with a browser on http://localhost:80
-
 
 ## Readme from "Create React App"
 This project was bootstrapped with [Create React App](https://github.com/facebookincubator/create-react-app).