New ClientProxy

public class ClientProxy extends ServerProxy
{
    @Override
    public void registerRenderThings()
    {

    }

    @Override
    public int addArmor(String armor)
    {
        return RenderingRegistry.addNewArmourRendererPrefix(armor);
    }

    public void registerTESR(){
        //ClientRegistry.bindTileEntitySpecialRenderer(Class <? extends TileEntity> tileEntityClass, TileEntitySpecialRenderer specialRenderer) <- this is the method you call to register your TESR
        ClientRegistry.bindTileEntitySpecialRenderer(TileEntityTardis.class, new TardisTESR());
    }
}