Merge pull request #169 from mithro/patch-1

Update README to be clearer

examples/iceblink/README

diff --git a/examples/iceblink/README b/examples/iceblink/README
index 73846fa..d5ef8e6 100644
--- a/examples/iceblink/README
+++ b/examples/iceblink/README
@@ -2,7 +2,8 @@
 -iCEblink40-HX1K
 -iCEblink40-LP1K
 
-This example assumes the iCEblink40-HX1K board.
+This example assumes the iCEblink40-HX1K board. 
+The iCEblink40-LP1K is *not* compatible with this example without modification.
 
 The iCEblink40 boards have an on-board programmer with USB interface from Digilent.
 You need iCEburn to program the FPGA via this interface (or the original vendor