Added versioneer + misc changes

.github/workflows/ci.yml

@@ -22,6 +22,7 @@ jobs:
         pip install setuptools wheel twine build
         python -m build --sdist --wheel --outdir dist/ .
     - name: Publish to PyPI
+      if: github.repository == 'cyllab/ccinput'
       uses: pypa/gh-action-pypi-publish@master
       with:
         password: ${{ secrets.PYPI_TOKEN }}

MANIFEST.in

@@ -0,0 +1,2 @@
+include versioneer.py
+include ccinput/_version.py

README.md

@@ -58,12 +58,14 @@ end
 
 ## Installation
 ### From PyPI
-Package coming soon.
+```
+pip install ccinput
+```
 
 ### From Github
 You can install the bleeding-edge version of `ccinput` from Github:
 ```
-$ pip install git+https://github.com/cyllab/ccinput
+pip install git+https://github.com/cyllab/ccinput
 ```
 
 ## Usage

ccinput/__init__.py

@@ -0,0 +1,3 @@
+
+from . import _version
+__version__ = _version.get_versions()['version']