fix: ignore bakup file

backup file should also be disabled in
the IDE option setting

source folder should be acceptted

Author: GerryFerdinandus

.gitignore

@@ -1,9 +1,11 @@
 # ignore possible temporary file added in the root 
 /*.txt
 
+# ignore bakup files
+*.bak
+
 # folders generated by compiler. Should always be ignored.
 /lib
 
 #items in these folder should be added explicit
 /enduser
-/source