Add solution

Author: pletcher

index.js

@@ -0,0 +1,15 @@
+function shout(string) {
+  return string.toUpperCase()
+}
+
+function whisper(string) {
+  return string.toLowerCase()
+}
+
+function logShout(string) {
+  console.log(string.toUpperCase())
+}
+
+function logWhisper(string) {
+  console.log(string.toLowerCase())
+}