Add example documentation

Author: SimonBaeumer

examples/standard_streams.go

@@ -2,6 +2,7 @@ package examples
 
 import "github.com/SimonBaeumer/cmd"
 
+// CreateNewCommandWithStandardStream create new standard stream example
 func CreateNewCommandWithStandardStream() {
 	c := cmd.NewCommand("echo hello; sleep 1; echo another;", cmd.WithStandardStreams)
 	c.Execute()

examples/working_dir.go

@@ -2,6 +2,7 @@ package examples
 
 import "github.com/SimonBaeumer/cmd"
 
+// CreateWithWorkingDir sets the current working directory
 func CreateWithWorkingDir() {
 	setWorkingDir := func(c *cmd.Command) {
 		c.WorkingDir = "/tmp"