Fix interface for Drupal6 importer.
Fix interface for Drupal7 importer.
Add #validate to Drupal6
Fix self.process interface to be consistent.
Merge pull request #69 from jekyll/fix-interface

Fix interface of `self.process`
Update history to reflect merge of #69
Dynamically add in the commands for Jekyll execution
Move JekyllImport importers
Move importers again
Namespace all importers under JekyllImport::Importers
Add JekyllImport::Importer and JekyllImport::Importers
Merge pull request #76 from jekyll/reorganize

Reorganize importers under `JekyllImport::Importers` namespace
Require the importers
keep track of the subclasses of JekyllImport::Importer
require importers?
use ruby idiom in drupal7 importer
Add mysql2 as dev dependency
Use require_with_fallback in WordPress importers.

Closes #60
GoogleReader imports from Importer instead of Import
moved importers now in gemspec