This library is an extended from the Codeigniter library by adding the below features.
Provide a function to generate a thumbnail with given height and weight
without shrinking the image.
resizeThenCrop Crop the image with the given configuration setting
when initializing this library. This function works similar to resize function
on the Codeigniter framework's Image library. But the resulting image matches the given height and weight
after cutting the extra portion needed without shrinking the image.