USING MULTIVERSE CORE
1) Put the StratosNG.jar in your plugins directory

2) Install Multiverse Core if you don't have it

3) Start your server

4) Run the command :

/mv create <worldname> nether -g StratosNG

To use a predefined seed, use the command :

/mv create <worldname> nether -g StratosNG -s <seed>


USING BUKKIT.YML

1) Put the Stratos.jar in your plugins directory

2) Put these lines in your bukkit.yml :

worlds: <worldname> generator: StratosNG

3) Start your server​