On Windows, copy required DLLs next to ".node" file
Readme: update copyright
Readme: spacing
Readme: remove Contributors section

Hard to maintain, and besides, you can just look at this
page instead: https://github.com/Automattic/node-canvas/graphs/contributors
Merge pull request #442 from pandell/copy-dlls

On Windows, copy required DLLs next to ".node" file