Important fixed

Fixes

• allow horizrailenabled false and timeout issue #479
• allow left rail offset for left aligned scroll bars #483
• Fixed issue of shifting cursor in textarea #507
• Angular added #510
• Remove moot version property from bower.json #517
• Background Parallax Fix #518
• Browserify and Node/CommonJS support. #534
• Reset checkarea for mouse wheel event when the mouse moved #537
• Fixing nicescroll visibility inside Modal #544