update .gitignore

.gitignore

@@ -3,29 +3,29 @@
 # 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-*
-*.tmp
-*-save.pro
-*-save.kicad_pcb
+**/*.000
+**/*.bak
+**/*.bck
+**/*.kicad_pcb-bak
+**/*.kicad_sch-bak
+**/*-backups
+**/*.kicad_prl
+**/*.sch-bak
+**/*~
+_autosave-**/*
+**/*.tmp
+**/*-save.pro
+**/*-save.kicad_pcb
 fp-info-cache
 
 # Netlist files (exported from Eeschema)
-*.net
+**/*.net
 
 # Autorouter files (exported from Pcbnew)
-*.dsn
-*.ses
+**/*.dsn
+**/*.ses
 
 # Exported BOM files
-*.xml
-*.csv
+**/*.xml
+**/*.csv