Added debugging tutorial.

...mentation/tutorials/debugging/InteropDebugging/JS/main.js

documentation/tutorials/debugging/InteropDebugging/R/main.r

...entation/tutorials/debugging/InteropDebugging/manifest.mf

...nteropDebugging/src/com/oracle/truffle/r/JavaMessage.java

...gging/InteropDebugging/src/com/oracle/truffle/r/Main.java

documentation/tutorials/debugging/R/binSearch.r

documentation/tutorials/debugging/R/dummy.r

documentation/tutorials/debugging/R/dump.r

documentation/tutorials/debugging/tutorial.md