Fix - Add readme and requirements in Manifest.in

The package was not installable after the change for 1.3.0.

MANIFEST.in

@@ -1 +1,3 @@
 recursive-include survey *
+include readme.md
+include requirements*txt

setup.py

@@ -1,35 +1,48 @@
 
-import os
 import sys
+from os import path
 
-from setuptools import find_packages, setup
-
-ROOT = os.path.abspath(os.path.dirname(__file__))
+import setuptools
 
 if sys.version_info < (3, 0):
     sys.exit('Sorry, Python < 3.0 is not supported')
 
+description = "A django survey app, based on and compatible with "
+"\"django-survey\". You will be able to migrate your data from an ancient "
+"version of django-survey, but it has been ported to python 3 and you can "
+"export results as CSV or PDF using your native language."
+
 
 def add_package(package_list, package):
     package = package.replace("\n", "").split("#")[0]
     if package:
         package_list.append(package)
 
 
-setup(
+this_directory = path.abspath(path.dirname(__file__))
+with open(path.join(this_directory, 'readme.md'), encoding='utf-8') as f:
+    long_description = f.read()
+
+with open("requirements.txt", "r") as fh:
+    require = fh.readlines()
+require = [x.strip() for x in require]
+
+with open("requirements_dev.txt", "r") as fh:
+    extras_require = fh.readlines()
+# Remove the first two line (-r requirements.txt and a blank line)
+extras_require = {'dev': [x.strip() for x in extras_require[2:]]}
+
+setuptools.setup(
     name="django-survey-and-report",
-    version="1.3.0",
-    description="A django survey app, based on and compatible with "
-"\"django-survey\". You will be able to migrate your data from an ancient "
-"version of django-survey, but it has been ported to python 3 and you can "
-"export results as CSV or PDF using your native language.",
-    long_description=open(os.path.join(ROOT, 'readme.md')).read(),
+    version="1.3.1",
+    description=description,
+    long_description=long_description,
     long_description_content_type="text/markdown",
     author="Pierre SASSOULAS",
     author_email="[email protected]",
     license="AGPL",
     url="https://github.com/Pierre-Sassoulas/django-survey",
-    packages=find_packages(),
+    packages=setuptools.find_packages(),
     include_package_data=True,
     classifiers=[
         "Development Status :: 5 - Production/Stable",
@@ -44,12 +57,6 @@ def add_package(package_list, package):
         'Programming Language :: Python :: 3',
         "Framework :: Django",
     ],
-    install_requires=[
-        "Django", "django-bootstrap-form", "django-tastypie",
-        "django-registration", "pytz", "future", "ordereddict", "PyYAML",
-        "matplotlib", "seaborn", "numpy"
-    ],
-    extras_require={
-        'dev': ["django-rosetta", "pylint", "coverage", "mock"],
-    },
+    install_requires=require,
+    extras_require=extras_require,
 )