rewrite tutorial docs and example

examples/tutorial/setup.py

@@ -0,0 +1,23 @@
+import io
+
+from setuptools import find_packages, setup
+
+with io.open('README.rst', 'rt', encoding='utf8') as f:
+    readme = f.read()
+
+setup(
+    name='flaskr',
+    version='1.0.0',
+    url='http://flask.pocoo.org/docs/tutorial/',
+    license='BSD',
+    maintainer='Pallets team',
+    maintainer_email='contact@palletsprojects.com',
+    description='The basic blog app built in the Flask tutorial.',
+    long_description=readme,
+    packages=find_packages(),
+    include_package_data=True,
+    zip_safe=False,
+    install_requires=[
+        'flask',
+    ],
+)