update readme

.gist

@@ -1 +0,0 @@
-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

README.md

@@ -1 +1,16 @@
 My gists :)
+
+I ported them from gist.github.com so that I could easily mirror them in my private gitea instance.
+I used two scripts to help me:
+
+* Clone all my public gists as subtrees, so that their history could be merged into this repository's
+* Rename the gists based on either the gist description or file name (for gists with a single file)
+
+After that, the result was pretty much usable, and I only needed to merge/remove some of the repositories.
+
+
+To use the script you will need pygithub:
+
+```
+pip install pygithub
+```