Comments have been added to the Job class
Comment stubs have been added
Wrote comments for the Crawler class
Copied crawler comments
Wrote the headers for Crawler implementation classes
Fixed some grammar mistakes
The createJob method has been moved to the abstract class as well as comments have been written
Fixed NullPointerException bug in the getJobListAsJSON methods
The documentation has been written for the CrawlerServer class.
The documentation has been written for the CrawlerHandler class.