Change license from BSD 3-Clause to Apache 2.0

Author: yoikawa

pom.xml

@@ -16,7 +16,7 @@
 
   <licenses>
       <license>
-          <name>BSD 3-Clause</name>
+          <name>Apache License Version 2.0</name>
           <url>file://${basedir}/LICENSE.txt</url>
       </license>
   </licenses>
@@ -104,7 +104,7 @@
             <artifactId>maven-javadoc-plugin</artifactId>
             <configuration>
                 <bottom>Copyright (c) 2016-2019, Salesforce.com, Inc. All rights reserved. Licensed under
-                    the BSD 3-Clause license. For full license text, see the LICENSE.txt file in the
+                    the Apache License Version 2.0. For full license text, see the LICENSE.txt file in the
                     repository.
                 </bottom>
                 <doclint>none</doclint>