Fix anaconda simplejson issue

[theengineear]

Fixes #197

We now have an extras_require mapping to optional dependencies for python 2.6

[theengineear]

You can test that it works by doing the following in a local copy of this repo (i couldn't get it to work from github)

pip install -e '.[PY2.6]'

I'm using OHMYZSH hence those extras quoties...

[theengineear]

@etpinard and @scjody , seem like a reasonable solution?

[etpinard]

I like it. 💃

[theengineear]

The normal workflow I'm expecting is this (/dev/null just for brevity below):

$ pip install plotly > /dev/null
$ python -c 'import plotly'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "plotly/__init__.py", line 31, in <module>
    from plotly import plotly, graph_objs, grid_objs, tools, utils, session
  File "plotly/plotly/__init__.py", line 10, in <module>
    from . plotly import (
  File "plotly/plotly/plotly.py", line 35, in <module>
    from plotly import tools
  File "plotly/tools.py", line 22, in <module>
    from plotly.graph_objs import graph_objs
  File "plotly/graph_objs/__init__.py", line 12, in <module>
    from . graph_objs import (
  File "plotly/graph_objs/graph_objs.py", line 29, in <module>
    from plotly.graph_objs import graph_objs_tools
  File "plotly/graph_objs/graph_objs_tools.py", line 12, in <module>
    "Looks like you're running Python 2.6. Plotly expects newer "
ImportError: Looks like you're running Python 2.6. Plotly expects newer standard library versions of ordereddict and json. You can simply upgrade with these 'extras' with the following terminal command:
pip install 'plotly[PY2.6]'
$ pip install 'plotly[PY2.6]'  > /dev/null
$ python -c 'import plotly'
$ 

[scjody]

sweet, 💃

[scjody]

This hit another user. Can you 💃 this soon?

[theengineear]

@scjody , yup. Thanks!