Compatible with previous usage methods

Author: wujunze

src/Colors.php

@@ -68,7 +68,7 @@ public function __construct()
     }
 
     // Returns colored string
-    public function getColoredString($string, $foreground_color = null, $background_color = null, $new_line = true)
+    public function getColoredString($string, $foreground_color = null, $background_color = null, $new_line = false)
     {
         $colored_string = "";
 

tests/ColorTest/CliColorTest.php

@@ -17,7 +17,8 @@ public function testColoredString()
         $color = $this->createServer();
         $res = $color->getColoredString("Testing Colors class, this is purple string on yellow background.",
             "purple",
-            "yellow");
+            "yellow",
+            true);
         $this->assertEquals('Testing Colors class, this is purple string on yellow background.' . PHP_EOL, $res);
     }