serial port works, added setup instructions

[rpikern] / install

diff --git a/install b/install
index 837479c..269e7e4 100755 (executable)
--- a/install
+++ b/install
@@ -2,4 +2,4 @@
 
 mount /media/usbmass && \
        cp rpikern.bin /media/usbmass/kernel7.img && \
-       umount /media/usbmass && sync
+       umount /media/usbmass