Enhanced readability in README.md
Changed text based GPIO-list to some table based version.
This should enhance the readability.
Resolves
@@ -25,17 +25,15 @@ is okay in 1-bit mode to leave DAT3 of host disconnected.
Please run wires between the slave and master to make the example function
(pins are the same for the host and the slave):
-======== =========
- Signal GPIO NUM
-======== =========
- CLK GPIO14
- CMD GPIO15
- DAT0 GPIO2
- DAT1 GPIO4
- DAT2 GPIO12
- DAT3 GPIO13
- Ground GND
-======== =========
+| Signal | GPIO NUM |
+|--------|----------|
+| CLK | GPIO-14 |
+| CMD | GPIO-15 |
+| DAT0 | GPIO-2 |
+| DAT1 | GPIO-4 |
+| DAT2 | GPIO-12 |
+| DAT3 | GPIO-13 |
+| Ground | GND |
CMD and DAT0-3 lines require to be pulled up by 50KOhm resistors even in
1-bit mode. See *Board Compability* below for details. In 1-bit mode, the
