Merge pull request #89 from jeffvalk/master

[Fix #88] Invoke html parser directly.
Favor functions over namespaces in ns op
Merge pull request #92 from tpope/fn-over-ns

Favor functions over namespaces in ns op
[Fix #93] Use consistent macroexpand tests.

The `->` macro was rewritten for Clojure 1.6, so isn't the best choice
for testing. Use something simple, having consistent macroexpansion
across Clojure versions.
Update README to include instructions for use with Immutant.

This is as recommended by Toby Crowley (@tobias) in #80.