- [ADD] PrintWriter example from Java
- [CHANGE] Extended regex matching with more examples with switch / case
- [CHANGE] String interpolation with formatting and expressions explained.
[CHANGE] Comment match on serial key now mentions verbatim (multiline)
[CHANGE] Output examples added to matcher part and string interpolation part.
[ADDED] Output to additional println's.
Merge pull request #715 from Measuring/master

English - Scala - Changes to pattern matching, string interpolation and file writing