Merge pull request #1442 from DanNixon/add-kicad

Create KiCAD.gitignore

KiCAD.gitignore

+# For PCBs designed using KiCAD: http://www.kicad-pcb.org/
+
+# Temporary files
+*.000
+*.bak
+
+# Netlist files (exported from Eeschema)
+*.net
+
+# Autorouter files (exported from Pcbnew)
+.dsn