Crash when run on one of my README.md files.

[vext01]

Hi,

I installed mdvl using pip for Python-3.6 and ran it over:
https://raw.githubusercontent.com/softdevteam/krun/master/README.md

$ mdvl README.md
... renders document, then at the end:
md error:  not enough values to unpack (expected 2, got 1) 

[vext01]

It also crashes on:

 * hi

but not:

hi

Seems to be to do with lists.

[vext01]

I tried git master.

It works after applying this diff:

diff --git a/mdvl.py b/mdvl.py
old mode 100644
new mode 100755
index 2f8a315..a0eba98
--- a/mdvl.py
+++ b/mdvl.py
@@ -482,7 +482,7 @@ def sys_main():
                 md = fd.read()
     if err:
         print(err)
-        print md
+        print(md)
     else:
         main(md, term_width=cols)