Merge pull request #39 from Kriechi/logos

logos in all colors and formats

source/logo/README.md

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+# hyper Logos
+
+This folder contains SVG vector graphics of the hyper logo, stylized by an
+italic word "hyper" in all lower-case letters, framed above and below with red
+half cirlces or arcs.
+
+The *primary* and default style is a *black letters on white background*, see
+the files `hyper-black-bg-white` and `hyper-black-bg-transparent`.
+
+If your usage requires an inverted color view, please use white letters with
+transparent background if the background is already bright / light colored. If
+the existing background is "colorful", please use a solid white background for
+the logo. If, and only if your background is black, you can use white letters
+with black background. Only in special situations with potential usability or
+readability issues, please use gray letters on either transparent or white
+background.
+
+If possible, please use the vector file for your design (SVG file), otherwise
+use the pre-rendered PNG with high resolution, or render your own, e.g.,
+`inkscape -o output.png -d 150 hyper-gray-bg-white.svg`.