put license on its own page, too

diff --git a/license.mdwn b/license.mdwn
new file mode 100644 (file)
index 0000000..c916db3
--- /dev/null
+++ b/license.mdwn
@@ -0,0 +1,7 @@
+Unless otherwise specified, all content on this wiki is released under a dual license of
+
+ * the Creative Commons Attribution-Share Alike license, and
+ * the GNU Free Documentation License, with no Invariant Sections, no
+   Front-Cover Texts, and no Back-Cover-Texts.
+
+This reflects the [SIPB Documentation Licensing Recommendation](http://stuff.mit.edu/afs/sipb/admin/text/policy/documentation_licensing.txt).