Update influenza-like-illness-analysis.Rmd

module3/exo1/influenza-like-illness-analysis.Rmd

@@ -28,6 +28,8 @@ data_url = "http://www.sentiweb.fr/datasets/incidence-PAY-3.csv"
 ```
 
 ```{r}
+#The idea if to have a local backup of the file, in the case of the website being down or cease to exist.
+
 data_csv = "grippal.csv"	
 if (!file.exists(data_csv)) {	
     download.file(data_url, data_csv, method="auto")