Add improvements by taikedz and EdwardThorsten

* add protector blocks to hud
* change from unknown source
* add mod explicit name
* Add handler for other mods to advise protection
  * Allow other mods to register a handler to display protected areas in the hud
  * remove the protector mod specific code from this areas code
* support non-numeric IDs
* adjusted handler registration name
* add API documentation for modding extension
* rename to explicit variables
* De-couple from original code
  * `api.lua` create separate handler for listing registered nodes, leave the areas list clean
  * `hud.lua` call second handler separately
  * `api.md` extended and clarified documentaion
* fixed typo in documentation
* ignore vim cache files
* adjust handler registration function name
* reinstate the format string unsigned int]
* reverting auth change
* restore code style, adjust further style
* added space for stylistic imrpovement
* stylistic fixes etc
* Merge branch 'master' of https://github.com/ShadowNinja/areas
  *Merge ShadowNinja's version
* Cleaning up deprecated calls.
* Merge pull request #1 from EdwardThorsten/master
  *Cleaning up deprecated calls.

.gitignore

@@ -1,2 +1,3 @@
 *~
+*.swp
 

api.lua

@@ -29,9 +29,9 @@ function areas:getAreasAtPos(pos)
 		for id, area in pairs(self.areas) do
 			local ap1, ap2 = area.pos1, area.pos2
 			if
-					(px >= ap1.x and px <= ap2.x) and
+				(px >= ap1.x and px <= ap2.x) and
-					(py >= ap1.y and py <= ap2.y) and
+				(py >= ap1.y and py <= ap2.y) and
-					(pz >= ap1.z and pz <= ap2.z) then
+				(pz >= ap1.z and pz <= ap2.z) then
 				res[id] = area
 			end
 		end

api.md

@@ -1,3 +1,50 @@
+# API Extension
+
+Adding your protections to the HUD
+----------------------------------
+
+If you are providing an extra protection mod to work in conjunction with the
+HUD feature of `areas`, you can register a callback to add your mod's code to
+display your protection's existence.
+
+Registering a handler:
+
+* `areas.registerHudHandler(handler) --> nil`
+
+Handler specification:
+
+* `handler(pos,area_list) --> new_area_list`
+	* `pos` - the position at which to check for protection coverage by your mod
+	* `area_list` - the current list of protected areas
+	* `new_area_list` - the list of protected areas, updated with your entries
+
+Area list items:
+
+The area list item is a map table identified with an ID, and properties
+
+The ID should be in the format `modname:` and appended with an identifier for the protection.
+
+Each area list item should be a table with the following properties
+
+* `owner` - (required) the name of the protection owner
+* `name` - (optional) the name of the area
+
+Example
+-------
+
+	local myhandler = function(pos,area_list)
+		local areaowner = find_my_protections(pos)
+
+		if areaowner then
+			arealist["mymodname:first"] = {
+				name = "Protection name",
+				owner = areaowner, 
+			}
+		end
+	end
+
+	areas.register_hud_handler(myhandler)
+=======
 Areas mod API
 ===