Update metadata for release

Author: rkdarst

README.md

@@ -377,4 +377,5 @@ nbgrader autograde --ExecutePreprocessor.kernel_name=testcourse-0.5.9 R1_Introdu
 
 Developed at Aalto University Science-IT.  Primary contact: Richard
 Darst.  Contributions welcome from anyone.  As of early 2019, it is
-almost at production quality.
+mid 2019, it's usable but there may be bugs as it gets used in more
+sites.

setup.py

@@ -7,13 +7,15 @@
     name="envkernel",
     version="0.0.2.dev0",
     author="Richard Darst",
-    author_email="[email protected]",
-    description="Jupyter kernels in docker, singularity, Lmod",
+    author_email="[email protected]",
+    description="Jupyter kernels manipulation and in other environments (docker, Lmod, etc.)",
     long_description=long_description,
     long_description_content_type="text/markdown",
     url="https://github.com/NordicHPC/envkernel",
     #packages=setuptools.find_packages(),
     py_modules=["envkernel"],
+    keywords='jupyter kernelspec',
+    python_requires='>=3.5',
     entry_points={
         'console_scripts': [
             'envkernel=envkernel:main',
@@ -23,7 +25,11 @@
         "Programming Language :: Python :: 3",
         "License :: OSI Approved :: MIT License",
         "Operating System :: OS Independent",
-        "Development Status :: 3 - Alpha",
+        "Development Status :: 4 - Beta",
         "Framework :: Jupyter",
+        "Environment :: Console",
+        "Intended Audience :: System Administrators",
+        "Intended Audience :: Developers",
+        "Intended Audience :: Science/Research",
     ],
 )