patch

.gitignore

@@ -1,5 +1,5 @@
 .idea/
 composer.lock
 vendor/
-.php_cs.cache
 runtime/
+*.cache

README.md

@@ -1,13 +1,22 @@
 # PHP Tools
 
+- [ArrayMap](./src/ArrayMap.php) - tool for array and map data
+- [Datetime](./src/Datetime.php) - tool for date time operation
 - [ForkProcess](./src/ForkProcess.php) - multi-process development tool
 - [Helper](./src/Helper.php) - helper function
+- [ListToTree](./src/ListToTree.php) - convert list to tree
+- [TreeToList]('./src/TreeToList.php') - convert tree to list
 - [MemoryCounter](./src/MemoryCounter.php) - counter base on memory
 - [NumberSystemConvert](./src/NumberSystemConvert.php) - for convert number system
 - [RSACrypt](./src/RSACrypt.php) - RSA crypt tool
+- [UUID](./src/UUID.php) - generate uuid string
 
 ## Install
 
 ```bash
 composer require axios/tools
 ```
+
+## Usage
+
+> see [Unit Test Case](./tests/unit/)