docs: enhanced simple example

README.md

@@ -12,6 +12,8 @@ func main(){
 }
 ```
 
+Check out this [simple example file](cmd/simple/main.go) for the basic usage.
+
 ## Multiple Log Instance
 
 Create a new log instance (instead of using the `Default`).

cmd/simple/main.go

@@ -1,15 +1,24 @@
 package main
 
 import (
-	"git.martin-riedl.de/golang/log"
 	"runtime"
+
+	"git.martin-riedl.de/golang/log"
 )
 
 func main() {
 	someMethod()
+	anotherMethod()
 }
 
 func someMethod() {
 	log.Default.Info("Hello World")
-	log.Default.With("os", runtime.GOOS).Info("environment detected")
+	log.Default.With("os", runtime.GOOS).Warning("environment detected")
+}
+
+func anotherMethod() {
+	log.Default.WithMap(map[string]any{
+		"foo": "bar",
+		"bar": "baz",
+	}).Info("Second Hello World")
 }