update readme

README.md

@@ -22,7 +22,61 @@ For installing and using this colection in Icestudio follow these steps:
 * Select the collection: *Select > Collection*
 
 
-
+## Blocks
+* **Bus**
+  * Join-lcd-bus-8bits
+  * LCD-BUS1-join
+  * LCD-BUS1-split
+  * Split-lcd-bus-8bits
+* **Controllers**
+  * **4-bits**
+    * LCD-controller-busy-4-bits
+    * LCD-controller-open-4-bits
+  * **8-bits**
+    * LCD-controller-busy-8-bits
+    * LCD-controller-open-8-bits
+* **Parts**
+  * LCD-config
+  * LCD-io-4-bits-ICE40
+  * LCD-io-8-bits-ICE40
+  * **Nivel-0**
+    * LCD-cycle-ns
+    * LCD-cycle
+  * **Nivel-1**
+    * **4-bits-busy**
+      * 0-LCD-cycle-busy-4-bits
+      * 1-LCD-cycle-rw-4-bits
+      * 2-LCD-wait-busy-4-bits
+      * 3-LCD-write-busy-4-bits
+    * **4-bits-open**
+      * LCD-write-open-4-bits
+    * **8-bits-busy**
+      * LCD-cycle-rw-8-bits
+      * LCD-wait-busy-8-bits
+      * LCD-write-busy-8-bits
+    * **8-bits-open**
+      * LCD-write-open-8-bits
+
+## Examples
+* 00-Index
+* **01-Controller-busy-4-bits**
+  * 01-print-A-button
+  * 02_print-HOLA-button
+  * 03-Display-BIT
+  * 04-Display-2xBIT
+  * 05-memory-string
+  * 06-user-chars
+  * 07-switch-on-off
+  * 08-user-chars
+* **02-LCD-Shield**
+  * 01-print-A-button
+  * 02-print-HOLA-button
+  * 03-Display-BIT
+  * 04-Display-2xBIT
+  * 05-memory-string
+  * 06-user-chars-LCD-Shield
+  * 07-switch-on-off
+  * 08-user-chars
 
 ## Authors
 * [Carlos Venegas (Cavearr)](https://github.com/cavearr)