move sjoin to top-level namespace

geopandas/__init__.py

@@ -8,6 +8,7 @@ from geopandas.geodataframe import GeoDataFrame
 
 from geopandas.io.file import read_file
 from geopandas.io.sql import read_postgis
+from geopandas.tools import sjoin
 
 # make the interactive namespace easier to use
 # for `from geopandas import *` demos.

geopandas/tools/tests/test_sjoin.py

@@ -8,7 +8,7 @@ from shapely.geometry import Point
 
 from geopandas import GeoDataFrame, read_file, base
 from geopandas.tests.util import unittest, download_nybb
-from geopandas.tools import sjoin
+from geopandas import sjoin
 
 
 @unittest.skipIf(not base.HAS_SINDEX, 'Rtree absent, skipping')