Fix run instructions

[d3QUone]

Error when running following current instruction:

(.venv) vladimirkasatkin@vladimirkasatkin bench311 % pip install -e git://github.com/django/djangobench.git#egg=djangobench

Obtaining djangobench from git+git://github.com/django/djangobench.git#egg=djangobench
  Cloning git://github.com/django/djangobench.git to ./.venv/src/djangobench
  Running command git clone --filter=blob:none --quiet git://github.com/django/djangobench.git /Users/vladimirkasatkin/Developer/bench311/.venv/src/djangobench
  fatal: unable to connect to github.com:
  github.com[0: 140.82.121.4]: errno=Operation timed out

After using a proper URL:

(.venv) vladimirkasatkin@vladimirkasatkin bench311 % pip install -e git+https://github.com/django/djangobench.git#egg=djangobench

Obtaining djangobench from git+https://github.com/django/djangobench.git#egg=djangobench
  Cloning https://github.com/django/djangobench.git to ./.venv/src/djangobench
  Running command git clone --filter=blob:none --quiet https://github.com/django/djangobench.git /Users/vladimirkasatkin/Developer/bench311/.venv/src/djangobench
  Resolved https://github.com/django/djangobench.git to commit 4c88fa81c4d7618604ae51e07c03c23f6734c2e6
  Preparing metadata (setup.py) ... done
Installing collected packages: djangobench
  Running setup.py develop for djangobench
Successfully installed djangobench-0.10

[d3QUone]

Hi @collinanderson! Do you mind checking this bug request and the fix?

[collinanderson]

@d3QUone I don't have write access to this repo, but these README changes look good to me.

[d3QUone]

Hi @smithdc1! Do you mind checking this PR and probably merge it?