added simple test

setup.py

@@ -17,7 +17,5 @@ setup(name='meshvis',
         'numpy',
         'pythreejs'
       ],
-      test_suite='nose.collector',
-      tests_require=['nose'],
       include_package_data=True,
       zip_safe=False)

tests/test_indexed_attributes.py

+import unittest
+import meshvis
+
+class IndexedAttributes(unittest.TestCase):
+    
+    quad_verts = [[0, 0, 0], [1, 0, 0], [1, 1, 0], [0, 1, 0]]
+    quad_faces = [[0, 1, 2], [0, 2, 3]]
+
+    def point_attribute(self):
+        attrib = meshvis.PointAttribute(['a', 'b', 'c, ''d'])
+        resolved_attrib = meshvis.resolve_attributes(self.quad_faces, [attrib])
+        self.assertEqual(len(resolved_attrib), 6)
+        self.assertListEqual(resolved_attrib, ['a', 'b', 'c', 'a', 'c', 'd'])
+
+
+if __name__ == '__main__':
+    suite = unittest.TestLoader().loadTestsFromTestCase(IndexedAttributes)
+    unittest.TextTestRunner(verbosity=2).run(suite)