diff --git a/src/libvterm/README b/src/libvterm/README
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+This is a MODIFIED version of libvterm.
+
+The original can be found:
+On the original site (tar archive and Bazaar repository):
+	http://www.leonerd.org.uk/code/libvterm/
+Cloned on Github:
+	https://github.com/neovim/libvterm
+
+Modifications:
+- Add a .gitignore file.
+- Convert from C99 to C90.
+- Other changes to support embedding in Vim.
+-