Update README.md

Author: DisableGraphics

README.md

@@ -1,2 +1,10 @@
 # Web-page-downloader
 A web page downloader. Uses the wget command found in *nix operating systems.  
+
+Tested in Ubuntu MATE 18.04 with GCC 7.4.0 *Working with* compiler-made *bugs*
+
+WARNINGS
+  This is recommended to use with internet (for viewing the pages) because there are some web pages that just work online.
+  
+  There is a bug with the scanf function in C and GCC (IDE users won't have this issue) that makes you introduce the URL twice.               
+  Press enter and then introduce the URL.