Added missing menu links to Google and Keychain package documentation.

Author: eddieajau

manual/en-US/menu.md

@@ -3,8 +3,10 @@
 - [JCrypt](chapters/packages/crypt.md)
 - [JDatabase](chapters/packages/database.md)
 - [JGithub](chapters/packages/github.md)
+- [JGoogle](chapters/packages/google.md)
 - [JHttp](chapters/packages/http.md)
 - [JInput](chapters/packages/input.md)
+- [JKeychain](chapters/packages/keychain.md)
 - [JLog](chapters/packages/log.md)
 - [MVC](chapters/packages/mvc.md)
 - [Testing](chapters/testing.md)