* New section in InputStream to byte array article and recreating branch.
* Minor typo
* Code reformat using intellij formatter.
* Code reformat using intellij formatter.
* guava implementation to be completed
* guava implementation
* Added assert to guava test
* Fix formatting
* Added tests for FilenameFilter demo
-added a test to show FilenameFilter implementation
-added another test to show similar functionality using Predicate
* refactored code to get directory at a single location
* fixing formatting
* changed test class name to conform to custom rule
UnitTestNamingConventionRule lists the allowed test class names. Added ManualTest at the end to conform to the rule.
