refactor: organize exercises and questions for the 5th section

05-write-your-first-library-package/exercise/README.md

@@ -0,0 +1,18 @@
+# EXERCISE
+1. Create a new library
+2. In it, create a function that returns Go version
+3. Create a command and import your library
+4. Call your function that returns Go version
+5. Run your program
+
+## HINTS
+**Create your package function like this:**
+
+```go
+func Version() string {
+    return runtime.Version()
+}
+```
+
+## EXPECTED OUTPUT
+It should print the current Go version on your system.