Update the location of Language files for Windows Environment by chec…

…king at default installation path

apertium/__init__.py

@@ -2,6 +2,10 @@
 from apertium.analysis import Analyzer, analyze  # noqa: F401
 from apertium.generation import Generator, generate  # noqa: F401
 from apertium.translation import Translator, translate  # noqa: F401
+from platform import system
+from os import getenv
+from os.path import join
+from os.path import isdir
 
 
 if False:
@@ -38,9 +42,19 @@ def append_pair_path(pair_path):  # type: (str) -> None
     _update_modes(pair_path)
 
 
+def append_pair_path_windows():
+    if system() == 'Windows':
+        install_path = getenv('LOCALAPPDATA')
+        apertium_lang_path = \
+            join(install_path, 'apertium-all-dev', 'share', 'apertium')
+        if isdir(apertium_lang_path):
+            append_pair_path(apertium_lang_path)
+
+
 pair_paths = ['/usr/share/apertium', '/usr/local/share/apertium']
 analyzers = {}  # type: Dict[str, Tuple[str, str]]
 generators = {}  # type: Dict[str, Tuple[str, str]]
 pairs = {}  # type: Dict[str, str]
 for pair_path in pair_paths:
     _update_modes(pair_path)
+append_pair_path_windows()