docs: Document origin of the name

Fixes: #600
Signed-off-by: Lubomír Sedlář <lsedlar@redhat.com>

doc/about.rst

@@ -40,3 +40,19 @@ Links
 - Upstream GIT: https://pagure.io/pungi/
 - Issue tracker: https://pagure.io/pungi/issues
 - Questions can be asked on *#fedora-releng* IRC channel on FreeNode
+
+
+Origin of name
+==============
+
+The name *Pungi* comes from the instrument used to charm snakes. *Anaconda*
+being the software Pungi was manipulating, and anaconda being a snake, led to
+the referential naming.
+
+The first name, which was suggested by Seth Vidal, was *FIST*, *Fedora
+Installation <Something> Tool*. That name was quickly discarded and replaced
+with Pungi.
+
+There was also a bit of an inside joke that when said aloud, it could sound
+like punji, which is `a sharpened stick at the bottom of a
+trap <https://en.wikipedia.org/wiki/Punji_stick>`_. Kind of like software…