update php respimg to v2

v2.1.0

add tag for respimg v2 update

v2.0.1

v2 - refactoring to mozjpg - getting rid of imagick

v2.0.0

v2 - refactoring to mozjpg - getting rid of imagick

v1.0.9

Update composer.json

v1.0.8: Update Respimg.php

removing the image profile removal

v1.0.7

Fix ALPHACHANNEL constant for Imagick v7

v1.0.4

Update composer.json

v1.0.3

Update README.md

v1.0.2

Update README.md