Started adding example functions

examples.go

@@ -0,0 +1,9 @@
+package sliceops
+
+// Set of examples for all the functions
+
+func ExampleAdd() {
+	s1 := []float64{1, 2, 3, 4}
+	s2 := []float64{5, 6, 7, 8}
+	Add(s1, s2)
+}