SlideshowManager is a CMP (custom manager page) and snippet for MODX Revolution.  The manager allows you to easily upload new slides and schedule 
them based on start date and end date.  You can also just put slides in a TBD (to be determined).  Slideshow Manager allows you 
to have as many slides shows, called albums, as you want on your site.

Features:
    - Schedule slides by date
    - Managed slide show in the MODX Manager as a Custom Manager Page
    - Manage many slides shows(albums) from one place
    - Optionally force or constrain images to be an exact size and program will auto resize uploaded images if the dimensions are not exact
    - Totally customizable and controllable for all output: HTML, JavaScript and CSS
    - Build in jQuery Nivo slide show: http://nivo.dev7studios.com/ but you can build you own