Refactored update and bug fixes

Added

• Change log md file
• Support for drag touch event
• Support for pinch to zoom touch event
• Gulp build system
• Bootstrap modal demo
• github CI
• eslint check

Changed

• Better default arguments on some methods
• Convert code to coffeescipt
• Image.coffee refactor updateBgStyle

Fixed

• Npm package build

Initial Release

Fixed

• ECMA Script 5 compatibility
• Loosing data references in setInterval, now bind to image.wz object

Added

• Fullscreen event change support to reset drag and zomm position
• Npm package release
• Github package realease
• Plugin site

Changed

• plugin release name to wheelzoom-revived
• zoom function, Now supports zooming below canvas size, usefull for fullscreen mode