CsvReporterConfig returns null if directory exists

[anupbanerjee]

Class: CsvReporterConfig
Method: enable
Line 39: File foutDir = createFile();
The line above invokes the Parent AbstractCsvReporterConfig's createFile() method.
In createFile() method's
Line Number 45: boolean success = foutDir.mkdirs();
This method will return false, if the directory already exists.
Since the value returned is false in CsvReporterConfig the enable method will return false.
I don't know if this is correct implementation, the reporter should continue to update the CSV files if the directory and file already exists.