implemented more stuff along with samples

_examples/get_tree/main.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"log"
+
+	"github.com/alecthomas/repr"
+	"github.com/tlinden/i3ipc"
+)
+
+func main() {
+	ipc := i3ipc.NewI3ipc("SWAYSOCK")
+
+	err := ipc.Connect()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	tree, err := ipc.GetTree()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	repr.Println(tree)
+}