Ajout timer

extract.js

@@ -49,5 +49,14 @@ else {
 }
 
 function extract(source, name) {
+    name = name.trim();
+    if (verbose) {
+        console.info(`Search for ${name}'s co-authors...`);
+        timer.start();
+    }
     //TODO Extraction
+    if (verbose) {
+        timer.stop();
+        console.info(`${name}'s co-authors find in ${timer.time()}`);
+    }
 }