Exercise on Object Oriented Programming

Take the code in folder objectOriented from the sample code and do the following

1\. Use the code for classAccount.lua as an account
2\. Modify the code for classSpecialAccount so that classSpecialAccount.lua is a module
3\. Create a new file called createSpecialAccount.lua that will create a specialAccount
   from the specialAccount module and package
4\. Exercise the specialAccount to prove that it works
5\. Modify the specialAccount so that it has a printLimit method
6\. Modify the specialAccount so that it has a changeLimit method
   that can change the limit on the special account
```