Created translation to Czech language (#154)

* Create lang_CZ.py

* Added czech language to init .

* Update __init__.py

* Update lang_CZ.py

* Added translation to czech language

* Fixed thousands translation

* Added czech language to readme

* Changed pointword in czech translation.

* Create test_cz.py

* Fixed names for very big numbers.

* Fixed currency spelling.

* Created tests for czech language.

* Fixed: Shortened length of some long lines.

* Shortened one more line of code.

* Fixed tests

* Fixed flake-8.

* Changed name of the test class

tests/test_cz.py

@@ -0,0 +1,105 @@
+# -*- encoding: utf-8 -*-
+# Copyright (c) 2015, Savoir-faire Linux inc.  All Rights Reserved.
+
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+# MA 02110-1301 USA
+
+from __future__ import unicode_literals
+
+from unittest import TestCase
+
+from num2words import num2words
+
+
+class Num2WordsCZTest(TestCase):
+    def test_cardinal(self):
+        self.assertEqual(num2words(100, lang='cz'), "sto")
+        self.assertEqual(num2words(101, lang='cz'), "sto jedna")
+        self.assertEqual(num2words(110, lang='cz'), "sto deset")
+        self.assertEqual(num2words(115, lang='cz'), "sto patnáct")
+        self.assertEqual(num2words(123, lang='cz'), "sto dvacet tři")
+        self.assertEqual(num2words(1000, lang='cz'), "tisíc")
+        self.assertEqual(num2words(1001, lang='cz'), "tisíc jedna")
+        self.assertEqual(num2words(2012, lang='cz'), "dva tisíce dvanáct")
+        self.assertEqual(
+            num2words(12519.85, lang='cz'),
+            "dvanáct tisíc pětset devatenáct celá osmdesát pět"
+        )
+        self.assertEqual(
+            num2words(123.50, lang='cz'),
+            "sto dvacet tři celá pět"
+        )
+        self.assertEqual(
+            num2words(1234567890, lang='cz'),
+            "miliarda dvěstě třicet čtyři miliony pětset šedesát "
+            "sedm tisíc osmset devadesát"
+        )
+        self.assertEqual(
+            num2words(215461407892039002157189883901676, lang='cz'),
+            "dvěstě patnáct quintillionů čtyřista šedesát jedna kvadriliard "
+            "čtyřista sedm kvadrilionů osmset devadesát dva triliardy třicet "
+            "devět trilionů dva biliardy sto padesát sedm bilionů sto "
+            "osmdesát devět miliard osmset osmdesát tři miliony "
+            "devětset jedna tisíc šestset sedmdesát šest"
+        )
+        self.assertEqual(
+            num2words(719094234693663034822824384220291, lang='cz'),
+            "sedmset devatenáct quintillionů devadesát "
+            "čtyři kvadriliardy dvěstě třicet čtyři "
+            "kvadriliony šestset devadesát tři triliardy "
+            "šestset šedesát tři triliony třicet čtyři biliardy osmset "
+            "dvacet dva biliony osmset dvacet čtyři "
+            "miliardy třista osmdesát čtyři miliony dvěstě dvacet "
+            "tisíc dvěstě devadesát jedna"
+        )
+
+    def test_to_ordinal(self):
+        # @TODO: implement to_ordinal
+        with self.assertRaises(NotImplementedError):
+            num2words(1, lang='cz', to='ordinal')
+
+    def test_currency(self):
+        self.assertEqual(
+            num2words(10.0, lang='cz', to='currency', currency='EUR'),
+            "deset euro, nula centů")
+        self.assertEqual(
+            num2words(1.0, lang='cz', to='currency', currency='CZK'),
+            "jedna koruna, nula haléřů")
+        self.assertEqual(
+            num2words(1234.56, lang='cz', to='currency', currency='EUR'),
+            "tisíc dvěstě třicet čtyři euro, padesát šest centů")
+        self.assertEqual(
+            num2words(1234.56, lang='cz', to='currency', currency='CZK'),
+            "tisíc dvěstě třicet čtyři koruny, padesát šest haléřů")
+        self.assertEqual(
+            num2words(101.11, lang='cz', to='currency', currency='EUR',
+                      seperator=' a'),
+            "sto jedna euro a jedenáct centů")
+        self.assertEqual(
+            num2words(101.21, lang='cz', to='currency', currency='CZK',
+                      seperator=' a'),
+            "sto jedna korun a dvacet jedna haléřů"
+        )
+        self.assertEqual(
+            num2words(-12519.85, lang='cz', to='currency', cents=False),
+            "mínus dvanáct tisíc pětset devatenáct euro, 85 centů"
+        )
+        self.assertEqual(
+            num2words(123.50, lang='cz', to='currency', currency='CZK',
+                      seperator=' a'),
+            "sto dvacet tři koruny a padesát haléřů"
+        )
+        self.assertEqual(
+            num2words(19.50, lang='cz', to='currency', cents=False),
+            "devatenáct euro, 50 centů"
+        )