EIN historically used a call to python getcwd and gethostname to get information
about the currently running kernel. This won't work with non-python kernels, so
I this is an initial attempt to abstract out the call and make it language
agnostic. Still only works in Python, but at least should not cause errors with
other languages.
Maybe, just maybe ein now works under both IPython 2.x and IPython 3.0
(or what is the development version as of this commit). And by works I
mean open, closing, saving notebooks and communicating with the IPython
kernel. It is good.
Also fixed a bug in kernelinfo - os.uname is not implemented in Windows
(or mac, probably), but I think socket.gethostname() is available on all
three platforms.
