rewrote lecture 1
Merge pull request #27 from jpswanson/lecture_1

rewrote lecture 1
Merge pull request #28 from ohanar/deploy

initial deploy target
Edited lecture-1.md

Removed now-unnecessary calls to `render`.
Added Google Analytics code to index.md
Google Analytics: less stupid

Moved that script block to its own file. Restored event sending to
`loader.js`. Edited `title` in `index.md`
Edited syllabus and welcome message
Updated README.md

Edited code block to reflect current form, tweaked future plans
don't include google analytics snippet in source

including google analytics should be opt-in, not
opt-out since almost nobody is going to notice an
opt-out