Added google analytics tracker

Commit for testing
Some copy changes, fixed ga mispelling
Features font lighter: not final, but less inconsistent.

fix in the future: to make it look like the uses subheads
Add uses graphic

Not finalized, but sure as hell better than the previous placeholder.
Also, in-line styling because text-align:center; doesn't work…revisit.
Landing page photo

changed high quality .png to .gif
Merge changes
Revert "Merge changes"

This reverts commit 69efb1a72b644d5ee63e360f347f633e469da8f9, reversing
changes made to c6a1d4dc1fac7752aecb337761c1cfc386ddd2ec.
Merge pull request #35 from vigilant/gh-pages

Changes