Add description of upstream repo

9 years ago · 7bbd6e7f38
1 changed files with 7 additions and 0 deletions
--- a/externals/json/README.md
+++ b/externals/json/README.md
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+JSON for Modern C++
+===================
+
+This is a mirror providing the single required header file.
+
+The original repository can be found at
+ https://github.com/nlohmann/json/commit/21d23982cafe826cae088b2bb37cb40c8e7a81fe