Add OS X Memory and CpuStr values.

I found out how to get the amount of RAM and the CPU name from the command-line on OS X (10.9 Mavericks anyway). Hopefully, it hasn't changed from before.

For the CPU name, I get a string like "Intel(R) Core(TM) i5-2410M CPU @ 2.30GHz". For the amount of memory, I get 4294967296, which I divided by 1024 to get 4194304.

I'm fairly new to Armory, so I didn't find where those values would show up in the GUI.

Thanks,