Renamed example "Method Calling" into "Method Invocation"
Added documentation to the 'Nested Functions' example
Added documentation to the 'Loops' example
Fixed minor problem with the overloaded function 'functionC1'
Added documentation to the 'Method Invocation' example
Deleted initial 'hello' package with examples. No longer needed
Added example for coexistence of Scala and Java
Moved 'Partitioning' example to package 'collections' and consolidated into one file
Simplified foreach loop in 'Partitioning' example
Added a couple more examples