Create README.md (#467)

Author: trishahanlon

README.md

@@ -16,14 +16,12 @@ Optimizely Rollouts is free feature flags for development teams. Easily roll out
 
 #### Gradle
 
-The SDK is available through Bintray and is created with source and target compatibility of 1.8. The core-api and httpclient Bintray packages are [optimizely-sdk-core-api](https://bintray.com/optimizely/optimizely/optimizely-sdk-core-api)
-and [optimizely-sdk-httpclient](https://bintray.com/optimizely/optimizely/optimizely-sdk-httpclient) respectively. To install, place the
-following in your `build.gradle` and substitute `VERSION` for the latest SDK version available via MavenCentral.
+The Java SDK is distributed through Maven Central and is created with source and target compatibility of Java 1.8. The `core-api` and `httpclient` packages are [optimizely-sdk-core-api](https://mvnrepository.com/artifact/com.optimizely.ab/core-api) and [optimizely-sdk-httpclient](https://mvnrepository.com/artifact/com.optimizely.ab/core-httpclient-impl), respectively. 
 
 ---
 **NOTE**
 
-[Bintray/JCenter will be shut down](https://jfrog.com/blog/into-the-sunset-bintray-jcenter-gocenter-and-chartcenter/). The publish repository has been migrated to MavenCentral for the SDK version 3.8.1 or later. Older versions will be available in JCenter.
+Optimizely previously distributed the Java SDK through Bintray/JCenter. But, as of April 27, 2021, [Bintray/JCenter will become a read-only repository indefinitely](https://jfrog.com/blog/into-the-sunset-bintray-jcenter-gocenter-and-chartcenter/). The publish repository has been migrated to [MavenCentral](https://mvnrepository.com/artifact/com.optimizely.ab) for the SDK version 3.8.1 or later.
 
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