Fetch LFS properly on pip installation

setup.py

@@ -1,13 +1,29 @@
+import os
 from setuptools import setup, find_packages
+from setuptools.command.install import install as _install
+
+
+class install(_install):
+    def run(self):
+        self._fetch_lfs_objects()
+        _install.run(self)
+
+    def _fetch_lfs_objects(self):
+        os.system("git lfs pull")
+
 
 with open('requirements.txt') as f:
     required = f.read().splitlines()
 
+
 setup(
     name='ppiref',
     author='Anton Bushuiev',
-    version='1.0',
+    version='1.2.0',
     packages=find_packages(),
+    install_requires=required,
     include_package_data=True,
-    install_requires=required
+    cmdclass={
+        'install': install,
+    }
 )