Update version.

Refs nakupanda#56

Update changelog.txt

Update bower.json

refs nakupanda#56

Put source files from top level dir to dir ./src

Add option 'animate' for fading effect control.

Note: Sorry guys, the new files are compressed by YUI compressor because I don't have gulp installed on this computer.

Improved onshow and onhide

Fixed a coding mistake:

if(typeof something !== undefined) --> if(typeof something !== 'undefined')

More controls on closing a dialog.