Added Flag file
Added some imports to Getopts
Reorganized project structure.
Added GetoptsParser.parseSetup(String) method
Added GetoptsException
Added parse methods in Getopts
Added parseArgs method in GetoptsParser
Added GetoptsException to parse methods.
Added flag equals method
Added Getopts getFlagArgument method
Added isFlagExpected and isFlagInArgs method to Getopts
Added GetoptsParser parseArgs method
Added GetoptsParser tests.
Added junit 4.8.1 to pom.xml