Update CONTRIBUTING.md

MacDada · web-flow · commit 2c5940a1a4d7 · 2023-12-08T12:40:56.000+01:00
Added info about the required `cmake` FabioBatSilva#43 (comment)
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -84,7 +84,7 @@ I was missing `sei()`, `cli()` and `attachInterrupt()` in `ArduinoFake`, here is
     }
 1. excersice tests from command line, there are two ways based on your Makefile
    * default project [Makefile](/Makefile), 
-     * execute `make`  
+     * execute `make` (`make` requires `cmake` - install it via `apt` / `brew` / `yum` or whatever package manager your system uses)
      * verify
    ```
 	Running tests...

Original file line number	Diff line number	Diff line change
@@ -84,7 +84,7 @@ I was missing `sei()`, `cli()` and `attachInterrupt()` in `ArduinoFake`, here is
`84`	`84`	`}`
`85`	`85`	`1. excersice tests from command line, there are two ways based on your Makefile`
`86`	`86`	`* default project [Makefile](/Makefile),`
`87`		- * execute `make`
	`87`	+ * execute `make` (`make` requires `cmake` - install it via `apt` / `brew` / `yum` or whatever package manager your system uses)
`88`	`88`	`* verify`
`89`	`89`	```
`90`	`90`	`Running tests...`