Update README.md

Author: skycommand

Unicode test suite/README.md

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 This is suite of files that old Wikipedia editors once used to take screenshots demonstrating the capabilities of various apps. The file names are in the same language as the contents.
 
+Use of Unicode is not the only features of this suite. The Unicode strings used in the file names have been in front of two billion Internet users for one and half a decade. They are the most peer-reviewed pieces of Unicode strings in the world. As such, this suite represents a major, widespread Unicode use case.
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 ## Licensing
 
 These files are the properties of Wikimedia Foundation and have been released under the terms of the [Creative Commons – Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)](https://creativecommons.org/licenses/by-sa/3.0/) license. This license gives you vast freedom to do as you like with them, but with the attribution and the share-alike obligations. This does not mean you cannot use them in a commercial product. All you have to do is to put them in a dedicated subfolder, add a `readme` or `license` file in that folder that gives due credits, and notify the user during the installation.