Merge pull request #2 from heike/carson-gadfly

knitr + julia + gadfly
Merge branch 'gh-pages' of https://github.com/heike/stat590f
first steps
small edit
Add example BLAS code to a 'gallery' directory

This commit starts a 'gallery' directory for people to post short
code examples. It also adds an example that uses mutating BLAS
functions for fast matrix operations.
Update blas_examples.md

Add another bullet about using BLAS to the concluding thoughts.
Update blas_examples.md

Submitted changes, reread changes, and thought of more changes.
edits in class
link to intro
Update README.md

Add link to juliabox.org
getting started on graphics presentation
added content for Gaston
ASCIIPlots
PyPlots completed