Update README after 0.7.0 release.

Author: heuermh

README.md

@@ -14,7 +14,7 @@ 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 0.34.0 or later, https://github.com/bigdatagenomics/adam
+ * ADAM: Genomic Data System 0.35.0 or later, https://github.com/bigdatagenomics/adam
 
 To build