Update .gitignore

Author: Moddler

.gitignore

@@ -1,11 +1,14 @@
-# For PCBs designed using KiCad: http://www.kicad-pcb.org/
-# Format documentation: http://kicad-pcb.org/help/file-formats/
+# For PCBs designed using KiCad: https://www.kicad.org/
+# Format documentation: https://kicad.org/help/file-formats/
 
 # Temporary files
 *.000
 *.bak
 *.bck
 *.kicad_pcb-bak
+*.kicad_sch-bak
+*-backups
+*.kicad_prl
 *.sch-bak
 *~
 _autosave-*
@@ -24,4 +27,5 @@ fp-info-cache
 # Exported BOM files
 *.xml
 *.csv
+
 .DS_Store