Added ability to tile the image a specified number of times.  Also added skeleton UI for supporting stretching/scaling.
Made the desktop-restart commands listed in the README into a handy script
Fixed input issues with QEditLines used for tiling and aspect ratio.  Fixed scaling issues with Stretch and Tile modes.  Implemented scaled-tiling.
Replaced much of the UI to be consistent with previous wallpaper plugins.  Centered image is currently broken.
Some code cleanup and added renderOption::None to prevent confusion and flag checking issues
Removed some unused code.  Fixed some off-by-X errors with RenderOptions.
Fixed alignment for Centered option
Changes to comply with pull request
Temporary fix for buffer artifacts when drawing an image smaller than a previously rendered image
Merge pull request #2 from jasonbcox/master

Added ability to change positioning of Wallpaper from Jason