1st revision javascript based tasks (DOM element create + append)

- Storing initial tasks data in json (hardcoded)
- Creates task DOM element from task json data
- Appends task DOM element to .tasks-container
Adds basic styling (:checked....)
Adds "add/destroy task", event listeners, and refactors ....
Extracts DOM append to create (consistent w/ destroy.)
Splits javascript up into two files (tasks.js and main.js)
Adds missing 'var' (bad!) and removes wonky assignment statement...
Merge pull request #5 from erikthedeveloper/feature/javascriptify_tasks

Adds interactivity/javascriptification

Could surely use some work/refactoring. Merging as-is