Added phase symbol lookup

Signed-off-by: Russ Magee <rmagee@gmail.com>

moonphase.go

@@ -358,8 +358,27 @@ func (m *Moon) PhaseName() string {
 	return names[i]
 }
 
+// PhaseSymbol returns the Unicode moon symbol
+// corresponding to the time set in m.
+func (m *Moon) PhaseSymbol() string {
+	syms := map[int]string{
+		0: "🌑",
+		1: "🌒",
+		2: "🌓",
+		3: "🌔",
+		4: "🌕",
+		5: "🌖",
+		6: "🌗",
+		7: "🌘",
+		8: "🌑",
+	}
+
+	i := int(math.Floor((m.phase + 0.0625) * 8))
+	return syms[i]
+}
+
 // Example usage
 // time := time.Date(2007, 10, 1, 24, 0, 0, 0, time.UTC)
 // // or //time := time.Now()
 // m := moonphase.New(time)
-// fmt.Println(m.PhaseName())
+// fmt.Println(m.PhaseName()+": "+m.PhaseSymbol())

moonphase_test.go

@@ -38,3 +38,9 @@ func ExamplePhaseName() {
 	fmt.Println(m.PhaseName())
 	//Output: Third Quarter
 }
+
+func ExamplePhaseSymbol() {
+	m := New(time.Date(2007, 10, 1, 24, 0, 0, 0, time.UTC))
+	fmt.Println(m.PhaseSymbol())
+	//Output: 🌗
+}