rename solutions
create plots.py

Replot the plots to be vector pdfs.
make solutions conform to PEP8
First version of single pixel lab
rename functions

Removed strange code at the end of file.  It shouldn't be there.
Moving forward
rename plotting script
remove Scipy module

Fix spacing to be PEP8
fix spacing

Clarified a math expression
add missing pass statements
rename plotting script
update plotting script
fix spacing
add plotting script

Update plot (reduced filesize by 90%)
rename plotting script
rename solutions file
update plots and solutions
fix spacing
rename solutions
rename function to correspond with problem label