Merge pull request #349 from jlaura/newstyle_wed

Added W generation
Merge pull request #354 from jlaura/newstyle_wed

Node insertion, precursor to segmentation.
Update README.md
Adding files used in some examples as per Luc's request.
Merge pull request #421 from pedrovma/examples

Adding files used in some examples as per Luc's request.
ENH: Update doc instructions for napoleon dependency
Merge pull request #422 from sjsrey/napoleon

ENH: Update doc instructions for napoleon dependency
Update news.rst
Merge pull request #423 from sjsrey/master

Update news.rst
Apparent diffs without effect from moving machines
Changes in documentation to include viz in contrib page
Adding link to wiki in github
Merge pull request #425 from darribas/viz2contrib

Viz2contrib
Merge branch 'master' of github.com:pysal/pysal into network
plane sweep for intersection detection
update - need to work on plane sweep for a grid network
changes to dev docs
a note about using reference citations
merging conflicts
Merge pull request #427 from pastephens/master

devel docs