Changed SomeController to be a health check

server/src/main/java/server/api/HealthCheckController.java

@@ -0,0 +1,16 @@
+package server.api;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/")
+public class HealthCheckController {
+    @GetMapping("/")
+    @ResponseBody
+    public String index() {
+        return "Server is online!";
+    }
+}