Add uid and gid options for user impersonation
Merge pull request #30 from peters/master

Windows Support
binding: prettyify
pty_win: fix styling

2 spaces instead of 4, some other nits...
v0.2.0
Merge remote-tracking branch 'marsup/set-uid-gid'
refactor uid/gid.
fix wscript for unix.
v0.2.1
minor arg fix.
fix build on v0.10.x

I don't think this is the most *proper* fix but at least the unit tests
are passing so I think it's mostly working as expected...

Closes #32.
v0.2.2
fix compilation on apple platforms. fixes #35.
v0.2.3
smarter handling of environment variables.

See: https://github.com/chjj/tty.js/issues/95
send SIGHUP instead of SIGTERM.
minor refactor.