Documentation updated

README.md

@@ -6,27 +6,38 @@ License GPL-V3: https://www.gnu.org/licenses/gpl-3.0.html
 This is a developer helper mod, allow run any lua code for testing reason. The mod can list and run lua-scripts placed in checks subfolder. some check scrips provided.
 
 # Features
-- list files on DOS and UNIX OS
-- redirection of print() output to minetest chat. (can be disabled by changing code line "print_to_chat"
+- redirection of print() output to minetest chat. (can be disabled by changing code line "print_to_chat")
 - robust call of the scripts trough "pcall" does not crash the game in case of syntax- or runtime errors
-- run scripts using chat command or the QA-Block node
+- all functionality available trough chat commands and the QA-Block node
+- refresh and list the checks script list at runtime
+- edit the code before calling them
+- type code and run them
+
+![Screenshot](screenshot.png)
 
 # Dependencies
-- default - some default tiles and sounds used on block from default
-- smartfs - optional, enable GUI for check selection - currently built-in till needed changes are in upstream
+- smartfs - GUI for check selection is implemented using smartfs - currently a provided version is used so there is no dependency
 
-# Available check modules
-- same_recipe - check installed items for similar recipe
-- list_spawning_mobs - just list mobs.spawning_mobs variable
-- own modules can be placed
+# Provided check modules
+- empty - Empty file for your own checks
+- global_variables - List suspicious global variables
+- is_ground_content - This checker lists all nodes for which is_ground_content == true
+- light_source_15 - List all nodes for which light_source >= 15
+- list_entities - Lists all the registered entities (except builtin)
+- list_spawning_mobs - List entities that are mobs from mobs_redo or compatible framework
+- no_item_description - Lists all items without description
+- same_recipe - Find duplicate crafting recipes
+- unobtainable_items - Lists items which seem to be unobtainable
+- useless_items - Lists all items which are probably useless
 
 # How to use:
 add the mod to the game you like to test
 
 ## Using chat command /qa_block
-- qa_block ls - list all available check modules
-- qa_block sel - display and run check using the selection dialog (smartfs only)
-- qa_block checkname - run check
+- qa ls - list all available check modules
+- qa sel - display and run check using the selection dialog (smartfs only)
+- qa checkname - run check
+- qa - run default module (hardcoded to "same_recipe")
 
 ## Using the block
 1. get the QA-Block from creative inventory
@@ -35,3 +46,7 @@ add the mod to the game you like to test
 3b - with smartfs - start the check using selection dialog
 
 In all cases - check the debug.txt for test results
+
+
+# Credits
+- Wuzzy2 - thanks for ideas, code optimizations and the most check scripts