feat: add README.md

Author: hearot

README.md

@@ -1,2 +1,45 @@
 # primecount
-A Python wrapper for primecount.
+A Python wrapper for [primecount](https://github.com/kimwalisch/primecount).
+
+### Documentation
+
+This package follows the documentation provided by [the C API reference](https://github.com/kimwalisch/primecount), generating three methods: `primecount.nth_prime`, `primecount.pi` and `primecount.phi`.
+
+### Installation
+
+In the first place, you have to download [the source code of the library](https://github.com/kimwalisch/primecount) and build it. Make sure you have installed [cmake](https://cmake.org/), [git](https://git-scm.com/) and [make](https://www.gnu.org/software/make/). You might have to make use of `sudo` if `make install` ever fails.
+
+```
+git clone https://github.com/kimwalisch/primecount
+cd primecount
+cmake . -DBUILD_SHARED_LIBS=ON
+make -j
+make install
+```
+
+After having installed the library, it's time to install the Python wrapper by cloning this repository. Make sure you have installed [pip](https://pypi.org/project/pip/) and that `primecount` is reachable as a shared library using a compiler.
+
+```
+git clone https://github.com/hearot/primecount
+cd primecount
+pip install .
+```
+
+Instead of the last command, you can type `python setup.py install` as well.
+
+### Commit messages
+
+> See [Conventional Commits](https://www.conventionalcommits.org).
+
+### Contributing
+
+> See [CONTRIBUTING.md](./CONTRIBUTING.md).
+
+### Versioning
+
+> See [PEP 440](https://www.python.org/dev/peps/pep-0440/).
+
+### Copyright & License
+
+- Copyright (C) 2020 [Hearot](https://github.com/hearot).
+- Licensed under the terms of the [BSD 2-Clause License](./LICENSE).

setup.py

@@ -29,7 +29,7 @@
 # POSSIBILITY OF SUCH DAMAGE.
 
 import re
-from distutils.core import Extension, setup
+from setuptools import Extension, setup
 
 CLASSIFIERS = [
     "Development Status :: 5 - Production/Stable",
@@ -56,6 +56,7 @@
 ]
 KEYWORDS = "c calculation computation extension primecount primes"
 GITHUB_REPOSITORY = "https://github.com/hearot/primecount/blob/v%s/"
+GITHUB_URL = "https://github.com/hearot/primecount"
 LICENSE = "BSD2"
 PACKAGE_NAME = "primecount"
 SOURCE_FILE = "primecount.c"
@@ -80,22 +81,29 @@
     long_description = f.read().replace("./", GITHUB_REPOSITORY % version)
 
 
-setup(
-    author=author,
-    author_email=author_email,
-    classifiers=CLASSIFIERS,
-    description=description,
-    ext_modules=[primecount_module],
-    keywords=KEYWORDS,
-    license="BSD2",
-    long_description=long_description,
-    long_description_content_type="text/markdown",
-    name=PACKAGE_NAME,
-    project_urls={
-        "Tracker": "https://github.com/hearot/primecount/issues",
-        "Source": "https://github.com/hearot/primecount",
-    },
-    python_requires=">=3.6.*",
-    url=url,
-    version=version,
-)
+try:
+    setup(
+        author=author,
+        author_email=author_email,
+        classifiers=CLASSIFIERS,
+        description=description,
+        ext_modules=[primecount_module],
+        keywords=KEYWORDS,
+        license="BSD2",
+        long_description=long_description,
+        long_description_content_type="text/markdown",
+        name=PACKAGE_NAME,
+        project_urls={
+            "Tracker": GITHUB_URL + "/issues",
+            "Source": GITHUB_URL,
+        },
+        python_requires=">=3.6.*",
+        url=url,
+        version=version,
+    )
+except SystemExit:
+    print(
+        "\nIt seems the installation didn't end well.\n"
+        "Have you installed primecount as library?\n"
+        f"Follow the guide on {GITHUB_URL}."
+    )