Added .editorconfig to tell others about spaces and tabs

Also:
- formated source code according to these rules;
- added spaces after commas in test code

See GitHub issue #101

.editorconfig

@@ -0,0 +1,15 @@
+# @see http://editorconfig.org/
+
+# This is the top-most .editorconfig file; do not search in parent directories.
+root = true
+
+# All files.
+[*]
+indent_style = space
+indent_size = 4
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[composer.json]
+indent_size = 4

composer.json

@@ -13,7 +13,9 @@
         }
     ],
     "autoload": {
-        "classmap": ["."]
+        "classmap": [
+            "."
+        ]
     },
     "require-dev": {
         "phpunit/phpunit": "4.1.*"

examples/basic.php

@@ -28,9 +28,17 @@ $csv->auto('_books.csv');
 ?>
 </pre>
 <style type="text/css" media="screen">
-	table { background-color: #BBB; }
+    table {
-	th { background-color: #EEE; }
+        background-color: #BBB;
-	td { background-color: #FFF; }
+    }
+
+    th {
+        background-color: #EEE;
+    }
+
+    td {
+        background-color: #FFF;
+    }
 </style>
 <table border="0" cellspacing="1" cellpadding="3">
     <tr>

examples/conditions.php

@@ -28,9 +28,17 @@ $csv->auto('_books.csv');
 ?>
 </pre>
 <style type="text/css" media="screen">
-	table { background-color: #BBB; }
+    table {
-	th { background-color: #EEE; }
+        background-color: #BBB;
-	td { background-color: #FFF; }
+    }
+
+    th {
+        background-color: #EEE;
+    }
+
+    td {
+        background-color: #FFF;
+    }
 </style>
 <table border="0" cellspacing="1" cellpadding="3">
     <tr>

examples/limit.php

@@ -41,9 +41,17 @@ $csv->auto('_books.csv');
 ?>
 </pre>
 <style type="text/css" media="screen">
-	table { background-color: #BBB; }
+    table {
-	th { background-color: #EEE; }
+        background-color: #BBB;
-	td { background-color: #FFF; }
+    }
+
+    th {
+        background-color: #EEE;
+    }
+
+    td {
+        background-color: #FFF;
+    }
 </style>
 <table border="0" cellspacing="1" cellpadding="3">
     <tr>

tests/properties/default_values_test.php

@@ -1,6 +1,7 @@
 <?php
 
 class default_values_properties_Test extends PHPUnit\Framework\TestCase {
+
     /**
      * CSV
      * The parseCSV object

tests/properties/worthless_test.php

@@ -1,6 +1,7 @@
 <?php
 
 class worthless_properties_Test extends PHPUnit\Framework\TestCase {
+
     /**
      * CSV
      * The parseCSV object
@@ -109,7 +110,7 @@ class worthless_properties_Test extends PHPUnit\Framework\TestCase {
         );
 
         //find our real properties
-        $real_properties = array();
+        $real_properties = [];
         for ($a = 0; $a < count($this->properties); $a++) {
             $real_properties[] = $this->properties[$a]->getName();
         }