Updated version to 3.0.0 and added new features

Author: davemorrissey

README.md

@@ -60,6 +60,8 @@ The view optionally uses subsampling and tiles to support very large images - a
 * Display images from assets, resources, the file system or bitmaps
 * Automatically rotate images from the file system (e.g. the camera or gallery) according to EXIF
 * Manually rotate images in 90° increments
+* Display a region of the source image
+* Use a preview image while large images load
 * Swap images at runtime
 * Use a custom bitmap decoder
 
@@ -126,7 +128,7 @@ Disable tiling if:
 
 Add the library to your app using one of these methods:
 
-* Add `com.davemorrissey.labs:subsampling-scale-image-view:2.4.0` as a dependency in your build.gradle file
+* Add `com.davemorrissey.labs:subsampling-scale-image-view:3.0.0` as a dependency in your build.gradle file
 * *or* download the library aar file from the releases page and add to your app manually
 * *or* clone the project and import the library subproject as a module in your app
 * *or* clone the project and copy the resources and classes from `com.davemorrissey.labs.subscaleview` into your project