Add missing __init__.py.
wpull_hooks: Removes requisite_urls and uses record_info

Switches over to Wpull scripting API version 2.

Re: ArchiveTeam/ArchiveBot#59
pipeline: Bumps version to 20140417.02, wpull requirement to 0.32
Merge pull request #61 from chfoo/issue/59-requisite_table

Pipeline: Removes requisite_urls, switch to scripting API v2
Use Trollop for job option parsing; add --js.
Pipeline and bot support for wpull's PhantomJS mode.
Don't generate page snapshots in PhantomJS mode.
--js -> --phantomjs.

The latter is longer, but seems to be more obvious.