Change from rawgit.com to github pages

Testing...

Add 3D visualization with Three.js

take care of a few things bootlint does not like; I ended up turning off bootlint

Add google analytics

Update notation for x and y components of electric field phasor to be consistent wtih latex lecture notes

Fix typo in equation: change E(z,t) to E(0,t)

Change first equation

Change definition_of_psi.tex to extend axes, thicker triangle lines, use more advanced tikz commands to center labels by lines

Replace the real operator with Re() which is obtained with \operatorname{Re}

Add scanned handwritten notes pdf file

Update equation for real electric field

Update latex tikz figure defining psi to include x,y axes, and correspondingly change image size in polarization_2d.html

Add ranges for psi and delta; Add Special Cases list at bottom

Change head title to Plane Wave Polarization