Add link submission form
Fixed show controller, added view
Added create action, save hash to db
Added todo
Made show view better
Add redirect for short codes
Add basic styling
Add flash message on new view
Add link preview
Refactor loading by hash_code - before action
Remove show, redirect to preview on create
Validate url is valid
Render form with errors on failure
Merge pull request #1 from mattheath/model

V1 Add model validation, and views