Enable installation into lapis namespace (#14)

* added basic lapis.caching package

* installable into lapis namespace (see #13)

* changed README to rst and added dev install note

README.rst

@@ -0,0 +1,14 @@
+=============
+lapis.caching
+=============
+
+Caching extension for LAPIS simulator
+
+Installation
+============
+
+Since the tooling support for namespace packages is incomplete,
+`lapis.caching` works as a namespace package on top of
+the non-namespace package `lapis`.
+This prevents development installations (``pip install -e .``)
+from working properly.

setup.py

@@ -0,0 +1,25 @@
+import setuptools
+
+with open("README.rst", "r") as readme:
+    long_description = readme.read()
+
+setuptools.setup(
+    name="lapis.caching",
+    version="0.0.1",
+    author="Eileen Kuehn, Max Fischer",
+    author_email="[email protected]",
+    description="LAPIS extension to simulate caching",
+    long_description=long_description,
+    url="https://github.com/MatterMiners/lapis.caching",
+    keywords="caching simulation opportunistic scheduling scheduler",
+    # Even though `lapis` is not a namespace package, declaring `lapis.caching`
+    # as one allows to drop `.caching` into `.lapis`. The result works as one.
+    packages=setuptools.find_namespace_packages(include=["lapis.*"]),
+    classifiers=[
+        "Programming Language :: Python :: 3",
+        "License :: OSI Approved :: MIT License",
+        "Development Status :: 2 - Pre-Alpha",
+    ],
+    install_requires=["lapis-sim"],
+    python_requires=">=3.6",
+)