title: create Json object in lua
body: <p>I have attempted to follow the following article and I keep getting module Json module not found.  </p>
  
  <p><a href="https://stackoverflow.com/questions/24908199/convert-json-string-to-lua-table">Convert JSON String to Lua Table?</a></p>
  
  <p>I am installing Json-lua from luarocks as per the article.  Then I am just copying and pasting the code.  When I run my lua script I get the following error message.</p>
  
  <p>What am I doing wrong??</p>
  
  <pre><code>root@fusion01:# luarocks install json-lua
  Installing https://rocks.moonscript.org/json-lua-0.1-3.rockspec...
  Using https://rocks.moonscript.org/json-lua-0.1-3.rockspec... switching to 'build' mode
  Cloning into 'json-lua'...
  remote: Enumerating objects: 7, done.
  remote: Counting objects: 100% (7/7), done.
  remote: Compressing objects: 100% (6/6), done.
  remote: Total 7 (delta 0), reused 4 (delta 0), pack-reused 0
  Receiving objects: 100% (7/7), 16.29 KiB | 0 bytes/s, done.
  Checking connectivity... done.
  Do not use 'module' as a build type. Use 'builtin' instead.
  Updating manifest for /usr/local/lib/luarocks/rocks
  json-lua 0.1-3 is now built and installed in /usr/local (license: CC)
  
  root@fusion01:# lua sendjson.lua         
  lua: sendjson.lua:21: module 'json' not found:
          no field package.preload['json']
          no file '/usr/local/share/lua/5.2/json.lua'
          no file '/usr/local/share/lua/5.2/json/init.lua'
          no file '/usr/local/lib/lua/5.2/json.lua'
          no file '/usr/local/lib/lua/5.2/json/init.lua'
          no file '/usr/share/lua/5.2/json.lua'
          no file '/usr/share/lua/5.2/json/init.lua'
          no file './json.lua'
          no file '/usr/local/lib/lua/5.2/json.so'
          no file '/usr/lib/x86_64-linux-gnu/lua/5.2/json.so'
          no file '/usr/lib/lua/5.2/json.so'
          no file '/usr/local/lib/lua/5.2/loadall.so'
          no file './json.so'
  stack traceback:
          [C]: in function 'require'
          sendjson.lua:21: in main chunk
          [C]: in ?
  root@fusion01:# cat sendjson.lua 
  #!/bin/lua
  
  
  --local raw_json_text    = JSON:encode(data)
  --local pretty_json_text = JSON:encode_pretty(data)
  
  local json = require "json"
  
  local t = { 
      ["name1"] = "value1",
      ["name2"] = { 1, false, true, 23.54, "a \021 string" },
      name3 = json.null
  }
  
  local encode = json:encode (t)
  print (encode)  --&gt; {"name1":"value1","name3":null,"name2":[1,false,true,23.54,"a \u0015 string"]}
  
  local decode = json:decode( encode )
  root@fusion01:# 
  </code></pre>