docs: add comment about old revision without *r in the name

Author: nerdyscout

README.md

@@ -2,6 +2,8 @@
 
 Supports Microchip 16bit [MCP3461R/MCP3462R/MCP3464R](https://www.microchip.com/en-us/product/MCP3461r) and 24bit [MCP3561R/MCP3562R/MCP3564R](https://www.microchip.com/en-us/product/MCP3561r) Analog Digital Converters.
 
+Without the `R` in the name seems to be early hardware versions which are [not recommended for designs] anymore. (https://www.microchip.com/en-us/product/MCP3464) anymore. As they do have a subset of features this lib should mostly work as well.
+
 ## Supported Boards
 
 This project is set up to be build with different MCUs, but I am not able the test each of them.

library.json

@@ -1,8 +1,8 @@
 {
-    "name": "MCP3x6x",
+    "name": "MCP3x6xR",
     "version": "0.0.2",
     "description": "Library to support Microchip MPC3x6x/R 16/24bit analog to digital converters.",
-    "keywords": "MCP3461/R, MCP3462/R, MCP3464/R, MCP3561/R, MCP3562/R, MCP3564/R",
+    "keywords": "MCP3461R, MCP3462R, MCP3464R, MCP3561R, MCP3562R, MCP3564R, MCP3461, MCP3462, MCP3464, MCP3561, MCP3562, MCP3564",
     "repository": {
         "type": "git",
         "url": "https://github.com/nerdyscout/Arduino_MCP3x6x_Library.git"