misc fixes. refactor.
add browsing posts by tag.
potentially add webRoot option.
if browsing by tag, select post under current tag.
highlight browse button while browsing by tag.
allow for a root path. e.g. `/blog`
use liquor v0.0.5
escape certain locals.
fix webroot.
.gitignore, index.js.
readme. minor fixes.
v0.0.2