Bump version to 3.0.0

Reviewed By: defHLT

Differential Revision: D44103047

fbshipit-source-id: bea49a3e05a641f1e5714054e8905d033ed0bc2d

Author: oprisnik

gradle.properties

@@ -18,7 +18,7 @@ org.gradle.jvmargs=-Xmx2048m
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
 # org.gradle.parallel=true
 
-VERSION_NAME=2.6.0
+VERSION_NAME=3.0.0
 GROUP=com.facebook.fresco
 SONATYPE_STAGING_PROFILE=comfacebook
 POM_URL=https://github.com/facebook/fresco