removed thumbnailator jar
initial commit for thumbnailer code
added development version of thumbnailator
added initial class for generating thumbnails
updated thumbnailer worker class to not use java.io or thumbnailator as these will be provided by GenerateThumbnail
renamed GenerateThumbnail.java->GenerateTHumbnail.scala, rewrote in Scala, removed Worker.java
resize function in GenerateThumbnail returns nothing, so save should work as expected
added test class for thumbnails
added test image to thumbnail
refactored thumbnailer to simply use ImageIO and BufferedImage.  Moved around test image resources
added test for non-existant original file
moved original image reading and thumbnail image reading into val
slight documentation change
another slight doc fix up
removed thumbnailator jar
added test to check for bad scale (scale should be greater than 0) and added text to post test clean up if there is no thumbnail to delete
added comments