Merge pull request #3 from squidfunk/master

Added include_as_lib option to interwork with Rebar
Add a command line option, -il, for include_as_lib
Bugfix a doc description
Bugfix the eunit timeout setting for the nif test

The timeout for the eunit tests was incorrectly written,
thus not producing an error, but instead just not applying the
timeout, resulting in the test timing out on slow machines such as a
laptop.
Feature: package support