Modified template to use new button graphic

- Added img folder and added the images
- Modified the jquery and angular templates to incorporate the graphic
- Added a commented out chunk of script imports for testing purposes
Gulp process update to factor in images directory

- New "images" tasks in gulpfile that copies img/ directory into dist/ directory
- dist/ directory updated with template changes involving new button graphic
Merge branch 'master' into chore/button-graphic
Fix image button Angular test

- Ensuring it tests that the child img element has correct src value
Merge pull request #12 from stulees/chore/button-graphic

Updated button with image