Update gradle to version 6.1.1

Use markdown version of the LGPL
Delete obsolete pom.xml

Change-Id: I7f141e2c3f50b9d97af99724f5ffc994a83d569e
diff --git a/README-dev.md b/README-dev.md
index 3f19a97..2468f96 100644
--- a/README-dev.md
+++ b/README-dev.md
@@ -25,6 +25,8 @@
 
 To get list of other targets, use `./gradlew tasks`.
 
+## Tests
+
 ### Unit Tests
 
 To run unit tests: