Keep consolidated shared_example generic.
Merge pull request #29 from GovWizely/calum/keep-consolidated-shared-examples-generic

Keep consolidated shared_example generic.
Updated the endpoint for DPL data.
Updated importer column headers and related fixture files to reflect changes made to the source file.
Bugfix [81403440]. Rename www.buyusainfo.net tp mr.export.gov
Merge pull request #34 from GovWizely/james/mr-export-gov

Developers see new URL for MRL info [81403440]
Oversight in '#parse_american_date' describe title
Recreate CSL indices before importer specs run.
String#typeize now returns a symbol.
Makes model_class an instance method of Importer.
Importer#import_then_purge_old.
Add purge_old to CSL;

Also: add spec examples that test whether or not an importer can purge
old documents.
Adds can-purge-old-documents to Parature FAQ.
Merge pull request #32 from GovWizely/calum/deletes-old-docs-take-2

Calum/deletes old docs take 2
Fully qualified class names throughout CSL.
Merge pull request #35 from GovWizely/calum/fully-qualified-class-names-throughout-csl

Fully qualified class names throughout CSL.
initial commit of cleaned up ctr branch
incremental checkin with improved specs and numerous changes.
Fixed deleted leading zeros bug for hs_6 and tariff_line entries. renamed the tariff rates recreate and import rake task.
Added data files for 3 additional countries