This is release 0.2.0

This is a pure snapshot of node-gyp with fixes to licensing and filenames.

The significant change is to deal with this issue in gyp: https://bugs.chromium.org/p/gyp/issues/detail?id=508

• do not use --generator-output to hide Makefiles in build subdirectory
• do not pass '-C build' to make process

With these changes, node-ninja is safe to use on native projects with dependencies, such as CZMQ, Zyre, etc.