feature: LOG attribute sample

src/main/java/tk/antoine/roux/Main.java

@@ -1,10 +1,15 @@
 package tk.antoine.roux;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
 @SpringBootApplication
 public class Main {
+
+    private static final Logger LOG = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
+
     public static void main(String[] args) {
         SpringApplication.run(Main.class, args);
     }