fix: Fix example code

README.md

@@ -24,20 +24,28 @@ func main() {
 	fmt.Println(cellwalker.At("ZZZ2").ColumnOffset(5).RowOffset(10).String()) // XFD12
 
 	// Range walking apply other boundary to walker
-	cellwalker.Within("C2:H3").At("C3").Right().Below().String()) // C4
+	fmt.Println(cellwalker.Within("C2:H3").At("C3").Right().Below().String()) // D3
 
 	// Too far jump in a new boundary
-	cellwalker.Within("C2:H3").At("ZZZ2").ColumnOffset(5).RowOffset(10).String()) // H3
+	fmt.Println(cellwalker.Within("C2:H3").At("ZZZ2").ColumnOffset(5).RowOffset(10).String()) // XFD12
 
 	// Range traversal
 	result1 := cellwalker.Within("B3:E5").At("C4") // Define range and initial cell position
-	result2 := result1.Tour() // result2 = D4
-	result3 := result2.Tour() // result3 = E4
-	result4 := result3.Tour() // result4 = B5
-	result5 := result4.Tour() // result5 = C5
-	result6 := result5.Tour() // result6 = D5
-	result7 := result6.Tour() // result7 = E5
-	result8 := result7.Tour() // nil
+	fmt.Println(result1.String()) // C4
+	result2 := result1.Tour()
+	fmt.Println(result2.String()) // D4
+	result3 := result2.Tour()
+	fmt.Println(result3.String()) // E4
+	result4 := result3.Tour()
+	fmt.Println(result4.String()) // B5
+	result5 := result4.Tour()
+	fmt.Println(result5.String()) // C5
+	result6 := result5.Tour()
+	fmt.Println(result6.String()) // D5
+	result7 := result6.Tour()
+	fmt.Println(result7.String()) // E5
+	result8 := result7.Tour()
+	fmt.Println(result8 == nil) // true
 }
 ```
 

cellwalker_test.go

@@ -278,3 +278,11 @@ func TestRowIndex(t *testing.T) {
 
 	assert.Equal(t, 4, result)
 }
+
+func TestChainTraversal(t *testing.T) {
+	result := Within("C2:H3").At("C3").
+		Right(). // Cannot move further right, hit the boundary
+		Below()  // Move down
+
+	assert.Equal(t, "D3", result.String())
+}