some update, some waring fixed

Author: inhere

README_zh.md

@@ -7,11 +7,12 @@
 - 颜色风格输出支持
 - 特殊格式信息显示
 - 用户信息交互支持
+- 其他功能
 
 ## 项目地址
 
-- **git@osc** https://git.oschina.net/inhere/php-console.git
 - **github** https://github.com/inhere/php-console.git
+- **git@osc** https://git.oschina.net/inhere/php-console.git
 
 ## 安装
 

src/AbstractApp.php

@@ -273,7 +273,7 @@ public function config($name, $default = null)
         if (strpos($name, '.') > 1) {
             [$topKey, $subKey] = explode('.', $name, 2);
 
-            if (isset($this->config[$topKey]) && isset($this->config[$topKey][$subKey])) {
+            if (isset($this->config[$topKey], $this->config[$topKey][$subKey])) {
                 return $this->config[$topKey][$subKey];
             }
         }

src/io/InputInterface.php

@@ -8,10 +8,6 @@
 
 namespace inhere\console\io;
 
-use inhere\console\Helper;
-use inhere\console\style\Style;
-use inhere\console\utils\Interact;
-
 /**
  * Class Input
  * @package inhere\console\io

src/io/OutputInterface.php

@@ -8,10 +8,6 @@
 
 namespace inhere\console\io;
 
-use inhere\console\Helper;
-use inhere\console\style\Style;
-use inhere\console\utils\Interact;
-
 /**
  * Class OutputInterface
  * @package inhere\console\io

src/style/LiteStyle.php

@@ -79,14 +79,20 @@ public static function add($text, $style = self::NORMAL)
     {
         return self::render($text, $style);
     }
+
+    /**
+     * @param $text
+     * @param string|int|array $style
+     * @return string
+     */
     public static function render($text, $style = self::NORMAL)
     {
         if (!Helper::isSupportColor()) {
             return $text;
         }
 
         if(is_string($style)) {
-            $out = isset(self::$styles[$style]) ? self::$styles[$style] : self::NORMAL;
+            $out = self::$styles[$style] ?? self::NORMAL;
         } elseif (is_int($style)) {
             $out = $style;
 
@@ -98,9 +104,7 @@ public static function render($text, $style = self::NORMAL)
         }
 
 //        $result = chr(27). "$out{$text}" . chr(27) . chr(27) . "[0m". chr(27);
-        $result = "\033[{$out}m{$text}\033[0m";
-
-        return $result;
+        return "\033[{$out}m{$text}\033[0m";
     }
 
     /**