Improve wording in list comprehensions example
Use a for loop in dictionary example
Make more concrete exercise suggestions for part 4
Highlight example between for loop and list comprehension

Fixes #17
Merge pull request #38 from pythonsd/part-4

Update dict examples and change sets to tuples
modify windows intall instructions

modify windows intall instructions : direct user to general python download page, and click on big yellow button for version 3.4.1
appropriate version for user's version of windows will be downloaded
Update part-0.ipynb
simplify windows installation

unique procedure for windows 32bits and windows 64bits
the approprite downloaded file is automatically chosen based on the type of the user's OS: 
- python-3.4.1.msi` for win32bits
- python-3.4.1.amd.msi` for win64bits
Adds detail to tuple section
Update part-0.ipynb
Update part-0.ipynb
Update part-0.ipynb
Adds wrap up to this part and link to official Python tutorial
Merge pull request #42 from pythonsd/part0-win-install

Part0 : simplified windows installation
Merge pull request #32 from pythonsd/part-4-suggestions

Merges suggested improvements for part 4
Highlight example between for loop and list comprehension

Fixes #17

Author:    Micah Denbraver <macromicah@gmail.com>
Merge pull request #41 from willingc/part4-tuple

Adds detail to tuple section
Fixes merge conflicts
Merge branch 'part-4-list-comprehension'

* part-4-list-comprehension:
  Highlight example between for loop and list comprehension