Add split command examples

Author: ionrock

example_test.go renamed to example_basic_test.go

@@ -0,0 +1,43 @@
+package procs_test
+
+import (
+	"fmt"
+
+	"github.com/ionrock/procs"
+)
+
+func ExampleSplitCommand() {
+	parts := procs.SplitCommand("echo 'hello world'")
+	for i, p := range parts {
+		fmt.Printf("%d %s", i+1, p)
+	}
+
+	// Output
+	// 1 echo
+	// 2 hello world
+}
+
+func ExampleSplitCommandEnv() {
+	env := map[string]string{
+		"GREETING": "hello",
+		"NAME":     "world!",
+		"PASSWORD": "secret",
+	}
+
+	getenv := func(key string) string {
+		if v, ok := env[key]; ok && key != "PASSWORD" {
+			return v
+		}
+		return ""
+	}
+
+	parts := procs.SplitCommandEnv("echo '$GREETING $NAME $PASSWORD'", getenv)
+
+	for i, p := range parts {
+		fmt.Printf("%d %s", i+1, p)
+	}
+
+	// Output
+	// 1 echo
+	// 2 hello world!
+}