Coin address generation for all coins

We are developing UI for coin trading. We have a plan to use all the coins present in coinmarketcap. I am greatly confused how to generate coin address for all coins. I knew that from cryptsy.com, it is possible to generate address for all coins from Bitcoin but I don’t know how to implement it. Is there any easiest way to generate coin address for all coins or can anybody tell how cryptsy do this for all coins? We are doing this in Ruby. Can you please suggest some more ideas to implement this. Any help is appreciated.