Update README.md with Spark and ADAM versions

Author: heuermh

README.md

@@ -13,8 +13,8 @@ Install
 
  * JDK 1.8 or later, http://openjdk.java.net
  * Apache Maven 3.6.3 or later, http://maven.apache.org
- * Apache Spark 3.0.2 or later, http://spark.apache.org
- * ADAM: Genomic Data System 0.35.0 or later, https://github.com/bigdatagenomics/adam
+ * Apache Spark 3.1.2 or later, http://spark.apache.org
+ * ADAM: Genomic Data System 0.36.0 or later, https://github.com/bigdatagenomics/adam
 
 To build
 
@@ -35,7 +35,7 @@ Welcome to
       ____              __
      / __/__  ___ _____/ /__
     _\ \/ _ \/ _ `/ __/  '_/
-   /___/ .__/\_,_/_/ /_/\_\   version 3.0.2
+   /___/ .__/\_,_/_/ /_/\_\   version 3.1.2
       /_/
 
 Using Scala version 2.12.10 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_191)