Lua TorchCraft Tutorial

[jchassoul]

🥮

[jchassoul]

cool and all but start by clean old content from the old python torchcraft tutorial and explain why stop since features like unit flags are not there if compared with the lua version... that or I could not make them work see the example code we are hacking flags with integers received using the python api, the good'old lua torchcraft api give us the flags as strings!