change dependency com.googlecode.flyway to org.flywaydb
change log info com.googlecode.flyway to  org.flywaydb

update import in classes

up plugin version = 0.4
up version for flyway = 3.0
added import org.flywaydb.core.internal.util.StringUtils
added ClassLoader for DriverDataSource
added empty string for logConfig
up version for plugins to 0.4.1

update README