title: CRC32 integer hash to string
body: <p>I was looking for a Lua implementation of CRC32 and stumbled upon this:
  <a href="https://github.com/openresty/lua-nginx-module/blob/master/t/lib/CRC32.lua" rel="nofollow noreferrer">https://github.com/openresty/lua-nginx-module/blob/master/t/lib/CRC32.lua</a></p>
  
  <p>However it returns the integer hash, how would I go about getting the string equivalent of it?</p>
  
  <p>Using the input "something" it returns: 1850105976</p>
  
  <p>Using an online CRC32 generator I get: "879fb991"</p>