Exercise on LuaSockets

   1\. Get the prior code on Coroutines and LuaSockets running
   2\. Trace though the code using the debugger
   3\. Prepare the following for discussion
       What is the purpose of the line connection:send("GET " .. file .. " HTTP/1.0\r\n\r\n")  ?
       What sets up the connection to the server.
       How does the code synchronize using coroutines?
       Discuss the relationship between coroutines and threads.
       What is the : after the connection identifier signify?
       Discuss the purpose of the threads table
   4\. Implement the following
      Get the HTML of the page retrieved as well as the size of page and display both in the console
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