Add docs

- Add more-detailed usage doc
- Add a smaller hello world example
- Include a user systemd file
- Fix config check to include second-level nested tables

docs/README.md

@@ -10,7 +10,7 @@
 
 ## Installation
 
-- Install Lua and other dependencies. Examples:
+- Install Lua and other dependencies. Example:
 
   - Debian/Ubuntu-based distributions: `apt-get install lua-socket lua-sec`
 
@@ -53,8 +53,8 @@
     from IRC commands sent to the server like `JOIN` or `PART`. Name the
     handler after the code word that will be used to trigger the function and
     add it to `itte_handlers` so it can be automatically picked up by the
-    module. For example, if the code users will type is "!hello" (where the "!"
-    is a prefix to mark it as a bot code), name the function
+    module. For example, if the code users will type is `!hello` (where `!` is
+    a prefix to mark it as a bot code), name the function
     `itte_handlers.hello()`. Handler names cannot start with numbers or special
     characters.
 

itte.lua

@@ -129,7 +129,11 @@ function itte.get_config(reload)
       -- Second-level nested tables
       if type(v) == "table" then
         for kk, vv in pairs(v) do
-          itte.config[k][kk] = vv
+          if (type(vv) == "table") or (type(vv) == "function") then
+            itte.config[k] = v
+          else
+            itte.config[k][kk] = vv
+          end
         end
       else
         itte.config[k] = v