Gingerrific

# Changes 

### app/images 
* Adding local images to repo including header background, minion .gif and assorted logos

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### index.html
* added skeleton templates for the following
  * sign-in view
  * sign-up view
  * dashboard view
  * nav-view
* updated header wording for both the header nav and user notification  

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### sign-up-view.js
* moved previous sign up functions from model.js into the sign-up-view  

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### dashboard-view.js && home-view.js
* added class name to templates  

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### main.scss
* added appropriate selectors for newly created content within the view templates.