Some code clean up

plugins/help.lua

@@ -2,7 +2,9 @@
 function run(msg, matches)
   local ret = ""
   for k, dict in pairs(plugins) do
-    ret = ret .. dict.usage .. " -> " .. dict.description .. "\n"
+  	if dict.usage ~= "" then
+    	ret = ret .. dict.usage .. " -> " .. dict.description .. "\n"
+	end
   end
   return ret
 end
@@ -12,5 +14,4 @@ return {
     usage = "!help",
     patterns = {"^!help$"}, 
     run = run 
-}
-
+}

plugins/images.lua

@@ -6,7 +6,7 @@ function run(msg, matches)
 end
 
 return {
-    description = "from image URL downloads it and sends to origin", 
+    description = "When user sends image URL (ends with png, jpg, jpeg) download and send it to origin.", 
     usage = "",
     patterns = {
     	"(https?://[%w-_%.%?%.:/%+=&]+.png)$",

plugins/media.lua

@@ -5,7 +5,7 @@ function run(msg, matches)
 end
 
 return {
-    description = "from media URL downloads it and sends to origin", 
+    description = "When user sends media URL (ends with gif, mp4, pdf, etc.) download and send it to origin.", 
     usage = "",
     patterns = {
     	"(https?://[%w-_%.%?%.:/%+=&]+.gif)$",

plugins/twitter.lua

@@ -61,7 +61,7 @@ function run(msg, matches)
 end
 
 return {
-    description = "Shows a tweet", 
+    description = "When user sends twitter URL, send text and images to origin. Requieres OAuth Key.", 
     usage = "",
     patterns = {"https://twitter.com/[^/]+/status/([0-9]+)"}, 
     run = run 

plugins/version.lua

@@ -8,7 +8,7 @@ function run(msg, matches)
 end
 
 return {
-    description = "Shows the bot version", 
+    description = "Shows bot version", 
     usage = "!version",
     patterns = {"^!version$"}, 
     run = run