update build process

build.sh

 #!/bin/sh
 
+echo "Compiling kernel..."
+
 TORCH=$(python -c "import os; import torch; print(os.path.dirname(torch.__file__))")
 SRC_DIR=torch_scatter/kernel
 BUILD_DIR=torch_scatter/build

setup.py

@@ -2,14 +2,12 @@ from os import path as osp
 
 from setuptools import setup, find_packages
 
-import build  # noqa
-
-__version__ = '0.2.1'
+__version__ = '0.2.2'
 url = 'https://github.com/rusty1s/pytorch_scatter'
 
 install_requires = ['cffi']
-setup_requires = ['pytest-runner', 'cffi']
-tests_require = ['pytest', 'pytest-cov']
+setup_requires = ['cffi']
+tests_require = ['pytest', 'pytest-runner', 'pytest-cov']
 docs_require = ['Sphinx', 'sphinx_rtd_theme']
 
 setup(

torch_scatter/__init__.py

@@ -6,7 +6,7 @@ from .functions.mean import scatter_mean_, scatter_mean
 from .functions.max import scatter_max_, scatter_max
 from .functions.min import scatter_min_, scatter_min
 
-__version__ = '0.2.1'
+__version__ = '0.2.2'
 
 __all__ = [
     'scatter_add_', 'scatter_add', 'scatter_sub_', 'scatter_sub',