Added Github Atom to env.rst
Merge pull request #473 from syndbg/master

Added Github Atom to env.rst
Update imaging.rst
Merge pull request #475 from evanv/master

Update imaging.rst
Added more info in virtualenvs.rst.
Added commands to specify python interpreter version.
Added build/ directory to .gitignore
Update learning.rst

Python Cookbook has been added to the list.
Merge pull request #477 from ugurcaliskan/patch-1

Update learning.rst
Merge pull request #476 from BastiTee/master

Added build/ directory to .gitignore
Merge pull request #474 from syndbg/master

Added more info in virtualenvs.rst.
Modify env $PATH in ~/.profile

Refer to https://github.com/kennethreitz/python-guide/pull/471
Merge pull request #478 from netspyer/patch-2

Modify env $PATH in ~/.profile
Update freezing.rst
Merge pull request #479 from driscollis/master

Update freezing.rst
Merge pull request #3 from kennethreitz/master

Update from original