gradle.properties: ready for 3.3.0-alpha2 build

Author: stephengold

gradle.properties

@@ -3,9 +3,9 @@ jmeVersion = 3.3.0
 # Version used for application and settings folder, no spaces!
 jmeMainVersion = 3.3
 # Version addition pre-alpha-svn, Stable, Beta
-jmeVersionTag = SNAPSHOT
+jmeVersionTag = alpha2
 # Increment this each time jmeVersionTag changes but jmeVersion stays the same
-jmeVersionTagID = 0
+jmeVersionTagID = 1
 
 # specify if JavaDoc should be built
 buildJavaDoc = true