added two new packages for handling/combining small files
updated package names for handling small files
minor docs changes
updated package documentation
Create how_to_create_a_lot_of_small_files.txt
Update how_to_create_a_lot_of_small_files.txt
added a new method for creating JavaSparkContext
minor doc changes
added Top10UsingTakeOrdered.java
code clean up
Make it work for Top-N and Bottom-N