Separate Feedback.js source code from the example code and make example easier to understand

[baer]

• Separated Feedback.js source code from the example code

• Cleaned up example website - removed extraneous markup, imported the compiled feedback.js, removed content not related to the example

  modified: .gitignore new file: feedbackjs-example/css/bootstrap-responsive.css new file: feedbackjs-example/css/bootstrap.css renamed: css/base.css -> feedbackjs-example/css/feedback.css new file: feedbackjs-example/index.html new file: feedbackjs-example/js/feedback.js renamed: libs/html2canvas.js -> feedbackjs-example/js/html2canvas.js new file: feedbackjs-example/js/jquery.js deleted: index.html deleted: libs/html2canvas.min.js