Added decimal rounding

src/main.rs

@@ -20,6 +20,7 @@ fn main() {
             Ok(num) => num,
             Err(_) => continue,
         };
-        println!("{}℉ is {}℃", input, convert(input));
+        println!("{}°F is {:.2}°C", input, convert(input)); //Prints the conversion 
+                                                            //and rounds to 2 decimals
     }
 }