Readme headers

Author: pwmarcz

README.md

@@ -2,12 +2,20 @@
 
 This tutorial has the following parts:
 
-1. Play the excellent [NandGame](http://nandgame.com/). Try to get at least to
-   "Data Flip-Flop".
+## [NandGame](http://nandgame.com/)
 
-2. If you are not familiar with bit operations, learn a bit about them. There
-   are some links and exercises in the [bits/](bits/) directory.
+Play the excellent [NandGame](http://nandgame.com/). Try to get at least to
+"Data Flip-Flop".
 
-3. Move on to Verilog basics in the [verilog/](verilog/) directory.
+## [Bit operations](bits/)
 
-4. Finally, we get to play with real hardware. See the [fpga/](fpga/) directory.
+If you are not familiar with bit operations, learn a bit about them. There
+are some links and exercises in the [bits/](bits/) directory.
+
+## [Verilog basics](verilog/)
+
+Move on to Verilog basics in the [verilog/](verilog/) directory.
+
+## [FPGA](fpga/)
+
+Finally, we get to play with real hardware. See the [fpga/](fpga/) directory.