beef_strike update

Raphael.
I send this commit because i see that your repository is not updated.
you must also delete commit #10, it put beef_strike file on cortana's
project root folder. It was an old mistake from me.

Look, i want to add a major change  in beef_strike functionnality, so
now i use a json library to communicate with beef server. the java code
work fine but i encounter some problem to convert it to his Sleep
equivalent.
here is the problematic code line :
ArrayList<HashMap> me = new ArrayList<HashMap>();
and
System.out.println(me.get(0).get("session").toString());
easy? hmm !... stop laughing.
Need help.