* rename .php_cs.dist to .php_cs

* fix #12, link cities back to Serbia
* add Montenegro as country and link capital
* fix most iso-3166 alpha 3 code
* add contributions in readme.

.php_cs

@@ -0,0 +1,96 @@
+<?php
+
+$finder = PhpCsFixer\Finder::create()
+    ->exclude('tests/Fixtures')
+    ->in(__DIR__)
+;
+$config = PhpCsFixer\Config::create()
+    ->setRiskyAllowed(true)
+    ->setRules([
+        '@PHP56Migration' => true,
+        '@PHPUnit60Migration:risky' => true,
+        '@PSR1' => true,
+        '@PSR2' => true,
+        '@Symfony' => true,
+        '@Symfony:risky' => true,
+        'align_multiline_comment' => true,
+        'array_indentation' => true,
+        'array_syntax' => ['syntax' => 'short'],
+        'blank_line_before_statement' => true,
+        'binary_operator_spaces' => [
+            'align_double_arrow' => true,
+            'align_equals' => false,
+        ],
+        'combine_consecutive_issets' => true,
+        'combine_consecutive_unsets' => true,
+        'comment_to_phpdoc' => true,
+        'compact_nullable_typehint' => true,
+        'concat_space' => ['spacing' => 'one'],
+        'escape_implicit_backslashes' => true,
+        'explicit_indirect_variable' => true,
+        'explicit_string_variable' => true,
+        'final_internal_class' => true,
+        'fully_qualified_strict_types' => true,
+        'function_to_constant' => ['functions' => ['get_class', 'get_called_class', 'php_sapi_name', 'phpversion', 'pi']],
+        'heredoc_to_nowdoc' => true,
+        'increment_style' => false,
+        'list_syntax' => ['syntax' => 'long'],
+        'logical_operators' => true,
+        'method_argument_space' => ['on_multiline' => 'ensure_fully_multiline'],
+        'method_chaining_indentation' => true,
+        'multiline_comment_opening_closing' => true,
+        'no_alternative_syntax' => true,
+        'no_binary_string' => true,
+        'no_extra_blank_lines' => ['tokens' => ['break', 'continue', 'extra', 'return', 'throw', 'use', 'parenthesis_brace_block', 'square_brace_block', 'curly_brace_block']],
+        'no_null_property_initialization' => true,
+        'no_short_echo_tag' => true,
+        'no_superfluous_elseif' => true,
+        'no_unneeded_curly_braces' => true,
+        'no_unneeded_final_method' => true,
+        'no_unreachable_default_argument_value' => true,
+        'no_unset_on_property' => true,
+        'no_useless_else' => true,
+        'no_useless_return' => true,
+        'ordered_class_elements' => true,
+        'ordered_imports' => true,
+        'php_unit_internal_class' => true,
+        'php_unit_ordered_covers' => true,
+        'php_unit_set_up_tear_down_visibility' => true,
+        'php_unit_strict' => true,
+        'php_unit_test_annotation' => true,
+        'php_unit_test_case_static_method_calls' => ['call_type' => 'this'],
+        'php_unit_test_class_requires_covers' => true,
+        'phpdoc_add_missing_param_annotation' => true,
+        'phpdoc_order' => true,
+        'phpdoc_trim_consecutive_blank_line_separation' => true,
+        'phpdoc_types_order' => true,
+        'return_assignment' => true,
+        'semicolon_after_instruction' => true,
+        'single_line_comment_style' => true,
+        'strict_comparison' => true,
+        'strict_param' => true,
+        'string_line_ending' => true,
+        'ternary_operator_spaces' => true,
+        'trim_array_spaces' => true,
+        'unary_operator_spaces' => true,
+        'yoda_style' => true,
+        'whitespace_after_comma_in_array' => true,
+    ])
+    ->setFinder($finder)
+;
+// special handling of fabbot.io service if it's using too old PHP CS Fixer version
+if (false !== getenv('FABBOT_IO')) {
+    try {
+        PhpCsFixer\FixerFactory::create()
+            ->registerBuiltInFixers()
+            ->registerCustomFixers($config->getCustomFixers())
+            ->useRuleSet(new PhpCsFixer\RuleSet($config->getRules()));
+    } catch (PhpCsFixer\ConfigurationException\InvalidConfigurationException $e) {
+        $config->setRules([]);
+    } catch (UnexpectedValueException $e) {
+        $config->setRules([]);
+    } catch (InvalidArgumentException $e) {
+        $config->setRules([]);
+    }
+}
+return $config;