Add a script generating a config on user input

[TortugaAttack]

Something like:

Do you want to test a CLI application or HTTP endpoint? 
> [default HTTP] HTTP

Do you want to test read, write or both? 
> [default read] read

Where is your HTTP GET endpoint located? 
> http://localhost:3030/ds/sparql

What do you want to name this system?
> fuseki

Do you want to add another system to add? 
> [default no] yes

Where is your HTTP GET endpoint located? 
> http://localhost:8890/sparql

What do you want to name this system?
> virtuoso

Do you want to add another system to add? 
> [default no] no

Now we will add your task (stresstest)
How long should the experiment task take in ms?
> 60000

Do you use plain text queries or SPARQL queries with %%variables%% patterns?
> [default plain] plain 

...

[bigerl]

two pennies:

• provide the options which are available, e.g. HTTP, CLI, ...
• %%variables%% what's that?