Image Search Sizer

Re-implements Google™ image search feature to filter images by megapixels.

Restores ability for the user to select a minimum megapixel value to search images by, i.e. 2MP, 4MP, 6MP, 8MP, 10MP, 12MP, 15MP, 20MP, 40MP, 70MP. This functionality is available in Tools -> Size. Code at https://github.com/danieljbingham/google-image-sizer - feel free to submit an issue or make a pull request on github!