Update version to 0.2.0-beta.1.

Author: hrytsenko

pom.xml

@@ -5,7 +5,7 @@
 
     <groupId>com.github.hrytsenko</groupId>
     <artifactId>json-data-spring-boot</artifactId>
-    <version>0.2.0-beta</version>
+    <version>0.2.0-beta.1</version>
 
     <url>https://github.com/hrytsenko/json-data-spring-boot</url>
     <inceptionYear>2020</inceptionYear>