It is a very simple plugin you just drag it into your server plugins folder and you are done basically unless you want some permissions added to players/groups.
This plugin disables the placing of TNT, Explosive Minecarts, Lava, and Flint and Steel.
Permissions
TnT.NoTnT:
TnTCart.NoTnT:
Flint-Steel.NoTnT:
Lava.NoTnT
ToDo List
None at the moment comment for stuff you want me to add.