feat: title case functionality added

example/main.go

@@ -83,4 +83,7 @@ func main() {
 
 	acronym := stringy.New("Laugh Out Loud")
 	fmt.Println(acronym.Acronym().ToLower()) // lol
+
+	title := stringy.New("this is just AN eXample")
+	fmt.Println(title.Title()) // This Is Just An Example
 }

stringy.go

@@ -39,6 +39,7 @@ type StringManipulation interface {
 	Surround(with string) string
 	SnakeCase(rule ...string) StringManipulation
 	Tease(length int, indicator string) string
+	Title() string
 	ToLower() string
 	ToUpper() string
 	UcFirst() string
@@ -337,6 +338,17 @@ func (i *input) ToLower() (result string) {
 	return strings.ToLower(input)
 }
 
+// Title makes first letter of each word of user input to uppercase
+// it can be chained on function which return StringManipulation interface
+func (i *input) Title() (result string) {
+	input := getInput(*i)
+	wordArray := strings.Split(input, " ")
+	for i, word := range wordArray {
+		wordArray[i] = strings.ToUpper(string(word[0])) + strings.ToLower(word[1:])
+	}
+	return strings.Join(wordArray, " ")
+}
+
 // ToUpper makes all string of user input to uppercase
 // it can be chained on function which return StringManipulation interface
 func (i *input) ToUpper() string {

stringy_test.go

@@ -292,6 +292,14 @@ func TestInput_TeaseEmpty(t *testing.T) {
 	}
 }
 
+func TestInput_Title(t *testing.T) {
+	str := New("this is just AN eXample")
+	against := "This Is Just An Example"
+	if val := str.Title(); val != against {
+		t.Errorf("Expected: to be %s but got: %s", against, val)
+	}
+}
+
 func TestInput_UcFirst(t *testing.T) {
 	tests := []struct {
 		name string