update README

Author: nikolasburk

README.md

@@ -10,16 +10,19 @@ This is the sample project that belongs to the [React & Apollo Tutorial](https:/
 git clone https://github.com/howtographql/react-apollo/
 ```
 
-### 2. Deploy the Prisma database service
+### 2. Install dependencies & Deploy the Prisma database API
 
 ```sh
 cd react-apollo/server
+yarn install
 yarn prisma deploy
 ```
 
 When prompted where (i.e. to which _cluster_) you want to deploy your service, choose any of the public clusters, e.g. `public-us1` or `public-eu1`. (If you have Docker installed, you can also deploy locally.)
 
-### 3. Set the Prisma service endpoint
+> **Note**: This repository uses a slightly outdated version of the Prisma CLI and will be updated soon to use the [latest release](https://www.prisma.io/docs/reference/upgrade-guides/upgrading-prisma/upgrade-to-1.7-iquaecuj6b).
+
+### 3. Set the Prisma API endpoint
 
 From the output of the previous command, copy the `HTTP` endpoint and paste it into `server/src/index.js` where it's used to instantiate the `Prisma` binding. You need to replace the current placeholder `__PRISMA_ENDPOINT__`:
 
@@ -55,7 +58,7 @@ const server = new GraphQLServer({
 })
 ```
 
-Note that the part `public-hillcloak-flier-952361` of the URL is unique to your service.
+Note that the part `public-hillcloak-flier-952361` of the URL is unique to your Prisma API.
 
 ### 4. Start the server