Doesn't start with default config

[keithbowes]

All that happens is you get an error on stderr about receiving a string instead of a table. Anyway, here's the patch to fix it:

diff --git a/config/config.lua b/config/config.lua
index 433f910..eaf2bbf 100644
--- a/config/config.lua
+++ b/config/config.lua
@@ -101,17 +101,17 @@ bar = {
 -- modifiers: shift, super, alt, ctrl, caps, mod2, mod3, mod5
 
 modkey = "super"
-dmenu = {"dmenu_run"}
+dmenu = "dmenu_run"
 
 terminal = os.getenv("TERMINAL")
 if not terminal then
-    terminal = {"urxvt"}
+    terminal = "urxvt"
 end
 
 keys = {
     -- application shortcuts
-    {"spawn", {modkey}, "Return", terminal},
-    {"spawn", {modkey}, "d",      dmenu},
+    {"spawn", {modkey}, "Return", {terminal}},
+    {"spawn", {modkey}, "d",      {dmenu}},
 
     -- bindings to lua functions: a function with no arguments is expected.
     -- wrap functions with arguments in lambdas