Readme: edited intro.

Version 3.2.1

Version 3.2.0

Version 3.1.0.

Version 3.0.0.

Version 2.2.4

Same as versions 2.2.2 and 2.2.3. Fixing the manifest to publish
colorpicker on plugins.jquery.com.

Version 2.2.3.

Same as 2.2.2 but needed a version update to publish colorpicker on
plugins.jquery.com.

Added dependencies to package.json.

Removed indentation for code samples.

Version 2.2

Adding LESS dynamic CSS.