Fix a typo (fixes #63)
Prefer :require over :use in ns macro.
Merge pull request #66 from Gonzih/prefer-require-over-use

Prefer :require over :use in ns macro.
Changes in example ns according to issue #64

According to conversation in issue #64 there is better to use [] in ns declaration after
special forms (:require, :use) since it's clearly describes data. I think same can be
applied to :import and any other form in ns macro.
Merge pull request #65 from Gonzih/data-in-ns

Changes in example ns according to issue #64
use customary 2-space indent
Merge pull request #67 from uvtc/patch-10

use customary 2-space indent