Checkpoint: szkielet

Signed-off-by: Marcin Woźniak <y0rune@aol.com>

buisnesslogic/src/main/java/com/plannaplan/services/ExchangeService.java

@@ -0,0 +1,18 @@
+package com.plannaplan.services;
+
+import com.plannaplan.entities.Exchange;
+import com.plannaplan.repositories.ExchangeRepository;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+@Service
+public class ExchangeService {
+    
+    @Autowired
+    private ExchangeRepository repo;
+
+    public Exchange save(Exchange exchange){
+        return this.repo.save(exchange);
+    }
+}