Bump version to 3.1.0

Reviewed By: oprisnik

Differential Revision: D49320443

fbshipit-source-id: 9ca4a395e14bd87488fd4ad186e7c244949649fe

Author: passy

README.md

@@ -31,7 +31,7 @@ Fresco supports Android 2.3 (Gingerbread) and later.
 If you are building with Gradle, simply add the following line to the `dependencies` section of your `build.gradle` file:
 
 ```groovy
-implementation 'com.facebook.fresco:fresco:3.0.0'
+implementation 'com.facebook.fresco:fresco:3.1.0'
 ```
 
 For full details, visit the documentation on our web site, available in English and Chinese:

docs/_config.yml

@@ -13,7 +13,7 @@ timezone: America/Los_Angeles
 ghrepo: "facebook/fresco"
 logo: /static/logo.png
 
-current_version: 3.0.0
+current_version: 3.1.0
 
 support_library_version: 24.2.1