[FIX] Pip install failure due to relativepath not being fulfilled

[PeterAlabaster]

When trying to install jac-format or jac_format via pip, I get the following:

Collecting jac-format
  Downloading https://files.pythonhosted.org/packages/78/b1/19ee7688284be98bd950d9d3b946b0f112fcf03f8dbe36b7b3664a6f285d/jac_format-0.1.1.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-install-mmbp3b/jac-format/setup.py", line 7, in <module>
        with open(join(_here, "../README.md")) as f:
    IOError: [Errno 2] No such file or directory: '/tmp/pip-install-mmbp3b/jac-format/../README.md'

To be clear, I'm not proposing this as the final solution as it's messy to have a duplicate LICENSE and README.md, but this fixed it for me locally, and as I can't raise issues on this repo due to it being a fork, I had to make a PR to raise it.

[seveibar]

I like the _here variable, great convention!

[seveibar]

I think this was somehow fixed in 0.1.4 because this worked for me:

[seve@coro:~]$ pip install jac_format                                                                                                                                                                                                                                                                                                   (09-05 08:53)
Defaulting to user installation because normal site-packages is not writeable
Collecting jac_format
  Downloading jac_format-0.1.4.tar.gz (9.6 kB)
Building wheels for collected packages: jac-format
  Building wheel for jac-format (setup.py) ... done
  Created wheel for jac-format: filename=jac_format-0.1.4-py3-none-any.whl size=9180 sha256=c9b4402f84f9bab546bce450dd42de2adc5b29ccadfbdca7cf5031b99e3fff72
  Stored in directory: /home/seve/.cache/pip/wheels/03/b2/e4/5d73722004cde1fbab86953901b8d5b02e457d01e9f50b4360
Successfully built jac-format
Installing collected packages: jac-format
Successfully installed jac-format-0.1.4

I also tried it in a docker container. But I'll leave this open for a bit. Can anyone confirm the issue with 0.1.4+?