Minor bug fixes, adding spotify music player, and adding sphinx documentation

doc/build/html/_sources/netscriptscriptarguments.rst.txt

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+Netscript Script Arguments
+==========================
+
+Arguments passed into a script can be accessed in Netscript using a special array called *args*. The arguments can be
+accessed using a normal array using the [] operator (args[0], args[1], etc...).
+
+For example, let's say we want to make a generic script 'generic-run.script' and we plan to pass two arguments into that script.
+The first argument will be the name of another script, and the second argument will be a number. This generic script will run the
+script specified in the first argument with the amount of threads specified in the second element. The code would look like::
+
+    run(args[0], args[1]);
+
+It is also possible to get the number of arguments that was passed into a script using::
+
+    args.length
+
+WARNING: Do not try to modify the args array. This will break the game. I will do my best to prevent players from doing this.