Windows compatability

[jsdpag]

There are at least two problems.

1. header.py uses Unix specific library resource.
2. memoryview cannot be pickled across the spawn to a child process.

Work arounds:

1. Check OS and assign hard-coded default value if Windows.
2. Check OS. Establish memoryview objects in call to .open( ) method if Windows, rather than during .__init__( ). If *nix then do establish memoryviews during init, for sharing amongst all child processes.

[jsdpag]

Problems 1 and 2 are resolved in v0.0.1.
But there is an problem 3, now.
There is some mysterious UTF encoding/decoding error when running demo.py. This crashes the parent process. And yet, the child processes continue to work as expected.