Added Polish translation

Signed-off-by: Tomasz Tomczyk <me@tomasztomczyk.com>

application/language/pl/pagination.php

+<?php
+
+return array(
+
+    /*
+    |--------------------------------------------------------------------------
+    | Pagination Language Lines
+    |--------------------------------------------------------------------------
+    |
+    | The following language lines are used by the paginator library to build
+    | the pagination links. You're free to change them to anything you want.
+    | If you come up with something more exciting, let us know.
+    |
+    */
+
+    'previous' => '&laquo; Poprzednia',
+    'next'     => 'Następna &raquo;',
+
+);
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application/language/pl/validation.php

+<?php
+
+return array(
+
+    /*
+    |--------------------------------------------------------------------------
+    | Validation Language Lines
+    |--------------------------------------------------------------------------
+    |
+    | The following language lines contain the default error messages used
+    | by the validator class. Some of the rules contain multiple versions,
+    | such as the size (max, min, between) rules. These versions are used
+    | for different input types such as strings and files.
+    |
+    | These language lines may be easily changed to provide custom error
+    | messages in your application. Error messages for custom validation
+    | rules may also be added to this file.
+    |
+    */
+
+    "accepted"       => ":attribute musi zostać zaakceptowane.",
+    "active_url"     => ":attribute nie jest prawidłowym adresem URL.",
+    "after"          => ":attribute musi zawierać datę, która jest po :date.",
+    "alpha"          => ":attribute może zawierać jedynie litery.",
+    "alpha_dash"     => ":attribute może zawierać jedynie litery, cyfry i myślniki.",
+    "alpha_num"      => ":attribute może zawierać jedynie litery i cyfry.",
+    "before"         => ":attribute musi zawierać datę, która jest przed :date.",
+    "between"        => array(
+        "numeric" => ":ttribute musi mieścić się w granicach :min - :max.",
+        "file"    => ":attribute musi mieć :min - :max kilobajtów.",
+        "string"  => ":attribute musi mieć :min - :max znaków.",
+    ),
+    "confirmed"      => "Potwierdzenie :attribute się nie zgadza.",
+    "different"      => ":attribute i :other muszą się od siebie różnić.",
+    "email"          => "The :attribute format is invalid.",
+    "exists"         => "Zaznaczona opcja :attribute jest nieprawidłowa.",
+    "image"          => ":attribute musi być obrazkiem.",
+    "in"             => "Zaznaczona opcja :attribute jest nieprawidłowa.",
+    "integer"        => ":attribute musi być liczbą całkowitą.",
+    "ip"             => ":attribute musi być prawidłowym adresem IP.",
+    "match"          => "Format :attribute jest nieprawidłowy.",
+    "max"            => array(
+        "numeric" => ":attribute musi być poniżej :max.",
+        "file"    => ":attribute musi mieć poniżej :max kilobajtów.",
+        "string"  => ":attribute musi mieć poniżej :max znaków.",
+    ),
+    "mimes"          => ":attribute musi być plikiem rodzaju :values.",
+    "min"            => array(
+        "numeric" => ":attribute musi być co najmniej :min.",
+        "file"    => "Plik :attribute musi mieć co najmniej :min kilobajtów.",
+        "string"  => ":attribute musi mieć co najmniej :min znaków.",
+    ),
+    "not_in"         => "Zaznaczona opcja :attribute jest nieprawidłowa.",
+    "numeric"        => ":attribute musi być numeryczne.",
+    "required"       => "Pole :attribute jest wymagane.",
+    "same"           => ":attribute i :other muszą być takie same.",
+    "size"           => array(
+        "numeric" => ":attribute musi mieć rozmiary :size.",
+        "file"    => ":attribute musi mieć :size kilobajtów.",
+        "string"  => ":attribute musi mieć :size znaków.",
+    ),
+    "unique"         => ":attribute zostało już użyte.",
+    "url"            => "Format pola :attribute jest nieprawidłowy.",
+
+    /*
+    |--------------------------------------------------------------------------
+    | Custom Validation Language Lines
+    |--------------------------------------------------------------------------
+    |
+    | Here you may specify custom validation messages for attributes using the
+    | convention "attribute_rule" to name the lines. This helps keep your
+    | custom validation clean and tidy.
+    |
+    | So, say you want to use a custom validation message when validating that
+    | the "email" attribute is unique. Just add "email_unique" to this array
+    | with your custom message. The Validator will handle the rest!
+    |
+    */
+
+    'custom' => array(),
+
+    /*
+    |--------------------------------------------------------------------------
+    | Validation Attributes
+    |--------------------------------------------------------------------------
+    |
+    | The following language lines are used to swap attribute place-holders
+    | with something more reader friendly such as "E-Mail Address" instead
+    | of "email". Your users will thank you.
+    |
+    | The Validator class will automatically search this array of lines it
+    | is attempting to replace the :attribute place-holder in messages.
+    | It's pretty slick. We think you'll like it.
+    |
+    */
+
+    'attributes' => array(),
+
+);
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