Added docs.

README.md

@@ -1 +1,23 @@
-# carkot
+This repository contains source code for Kotlin minicar control facility.
+
+
+  Raspberry Pi.
+
+ Download Raspberry Pi FS image (for 16G microSD) here:
+https://drive.google.com/file/d/0B16LpTmDcUUhLWwyMW5YUDZ5UW8/view?usp=sharing
+unbzip2 it, and put it to the card with
+sudo dd of=/dev/mmcblk0 if=./microsd.img bs=1M
+
+ Use user 'kotlin', password 'JetBrains', or 'pi', password 'raspberri'.
+
+ If not using provided image, please add file 49-stlinkv2-1.rules
+with content 
+ SUBSYSTEMS=="usb", ATTRS{idVendor}=="0483", ATTRS{idProduct}=="374b", \
+    MODE:="0666", \
+    SYMLINK+="stlinkv2-1_%n"
+to directory /etc/udev/rules.d.
+
+ To flash a binary program manually, use provided st-flash utility, like this
+   st-flash write program.bin 0x08000000
+
+ Also not that st-util can be used as GDB stub for on-device development.