Update the readme with the dependency installation command (#76)

---------

Co-authored-by: Jayasanka Weerasinghe <33048395+jayasanka-sack@users.noreply.github.com>

Author: dilankavishka

README.md

@@ -31,13 +31,15 @@ and easy-to-use framework for simulating user load and measuring system performa
 
 To run the performance tests locally, follow these steps:
 
-1. Start OpenMRS on port 80. (Use the docker file: [src/test/resources/docker-compose.yml](src/test/resources/docker-compose.yml) It contains demo patients for the test. [Learn more](#generating-demo-patient-data))
-
-For using the docker file, run the following command:
-```bash
+1. Install dependencies (and compile)
+   ```bash
+   ./mvnw install -DskipTests
+   ```
+2. Start OpenMRS on port 80. (Use the docker file: [src/test/resources/docker-compose.yml](src/test/resources/docker-compose.yml) It contains demo patients for the test. [Learn more](#generating-demo-patient-data))
+   ```bash
    docker compose -f src/test/resources/docker-compose.yml up
-```
-2. Execute the following command in your terminal:
+   ```
+3. Execute the following command in your terminal:
 
    **Standard** `export SIMULATION_PRESET='standard' && ./mvnw gatling:test` \
    **dev**  `export SIMULATION_PRESET=dev TIER_COUNT=2 TIER_DURATION_MINUTES=1 USER_INCREMENT_PER_TIER=10 && ./mvnw gatling:test`