add pcb v1.6 (yet unfinished) design files

.gitignore

@@ -0,0 +1,21 @@
+# For PCBs designed using KiCad: http://www.kicad-pcb.org/
+
+# Temporary files
+*.000
+*.bak
+*.bck
+*.kicad_pcb-bak
+*~
+_autosave-*
+*.tmp
+
+# Netlist files (exported from Eeschema)
+*.net
+
+# Autorouter files (exported from Pcbnew)
+*.dsn
+*.ses
+
+# Exported BOM files
+*.xml
+*.csv