Added Readme

Author: obukhow

README.md

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+mage resize with crop functionality for ideal proportions fit with every design. Instead of resizing of adding white frame this module will crop main part of image.
+
+*Attention! For now it will work only with GD2 image library.*
+
+To use adaptive resize just use standart product image helper as always, just change resize() method to adaptiveResize().
+Example
+```php
+$this->helper('catalog/image')->init($this->getProduct(), 'image')->adaptiveResize(400, 215)
+$this->helper('catalog/image')->init($this->getProduct(), 'image', $_image->getFile())->constrainOnly(TRUE)->keepAspectRatio(FALSE)->keepFrame(FALSE)->adaptiveResize(400, 300)
+//height is the same is width
+$this->helper('catalog/image')->init($this->getProduct())->constrainOnly(TRUE)->adaptiveResize(400)
+```