…ndows binary gems. rake-compiler-dock makes building Windows gems faster and with little to no setup compared to rake-compiler-dev-box. A simple 'rake gem:windows' should be enough. The cross ruby versions used by gem:windows are not passed to the container, so the rake-compiler-dock's defaults are used. These are slightly different.
It was only useful as long 0.9.0 wasn't relesed.
…newer staging layout.