changed PrepareConfiguration class -- added new enum class for SyslogFileReader class
added integration tests for apache common log file reader
added {Apache,Syslog}FileGenerator classes, which are used for integration tests
added RegexFileReader class, it is fundamental class for reading one line and parse it with regular expression
changed {Apache,Syslog}FileReader classes -- refactoring with RegexFileReader class
added apachelogfile.apache and syslogfile.syslog, which are used for integration tests
updated data set for integration tests