Add help for Windows Powershell and curl statements to test api

Author: xome

README.md

@@ -10,13 +10,31 @@ git clone [email protected]:xome/PenAndPaperDmHelperBackendSpringPostgres.git
 cd PenAndPaperDmHelperBackendSpringPostgres
 ```
 
-Define local directory for database files:
+Define local directory for database files and password for connection:
+
+Unix:
 ```shell
-echo "PATH_TO_DB=/path/to/persist/postgres/data" > .env
+printf "PATH_TO_DB=/path/to/persist/postgres/data\n" > .env
+printf "DB_PASSWORD=changeit\n" >> .env
+```
+
+Windows Powershell:
+```shell
+echo "PATH_TO_DB=//drive/path/to/persist/postgres/data`nDB_PASSWORD=changeit`n" > .env
 ```
 
 Run Docker Compose:
 ```shell
 docker-compose up
 ```
 
+Try to create an Adventure with curl:
+```shell
+curl -X PUT localhost:8080/adventure/Testadventure
+```
+
+See if the Adventure was saved:
+```shell
+curl localhost:8080/adventures
+```
+