update readme with kicad

README.md

@@ -1,2 +1,10 @@
 # OpenBCI_Wifi_Shield
 The schematics for the OpenBCI wifi shield
+
+All design files made with KiCad PCB design software.
+http://kicad-pcb.org/
+
+Disclaimer:
+
+These files are presented AS IS, with no representation of warranty or functionality.
+Designs are subject to chage without notice.