Support for Node 0.12.7

[graemechristie]

Running httpsys on the current version of node (0.12.7 at time of writing) throws the error:

Error: The httpsys module has not been pre-compiled for node.js version v0.12.7. You must build a custom version of httpsys.node. Please refer to https://github.com/tjanczuk/httpsys for building instructions.

Are there any intentions of creating a release of httpsys for Node 0.12 ?

I attempted building httpsys myself, but ran into a slew of errors building with VS2015, and not being a skilled c++ developer I would not presume to think I could fix them.