pipenv not in the requirements....

```
$ pip install --user wikix
Collecting wikix
  Downloading wikix-0.2.tar.gz
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-build-pAeC95/wikix/setup.py", line 3, in <module>
        from pipenv.project import Project
    ImportError: No module named pipenv.project

```