start importing wiki articles from github

wiki/source/tin.md

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+---
+title: tin
+---
+
+tin is a threaded NNTP and spool based UseNet newsreader for a variety of platforms.
+
+http://www.tin.org/
+
+it's under active development, with a last release on October 3, 2014. It is installed on ``tilde.club``, and should be invoked as `tin -r` to read from the remote news spool. Use <tab> to go to the next unread article and `w` to write a new article.
+
+if you have `tin` on your local box and can do [[ssh port forwarding]], you can read news using it. (details forthcoming).