Add travis-ci configuration
Cleanup gitignore
Params.printHelp() exits with 0 (instead of -1)
Travis-CI Tests builds JAR and executes it
Add travisci build-image to README
Travis-CI Tests check if no formatting was done
TCV: check Object as Array-Content-Type
Monty.g4/ASTBuilder remove deprecated operator[]

For Monty 1.0 the array-access will be done using the method get().
Remove deprecated function operator[] from Array.monty
Remove deprecated translation in NMV (operator[])
Add Array as corelib class
Remove deprecated TypeConverter.addArray()
Implement Array as Object-array
Implement (un)boxing for Arrays
CodeGenerator: change visibility of {resolve,cast}IfNeeded

These methods need to be visible in Operations later.
Operations: Implement Array.length()
Operations: Implement Array.set()
Operations: Implement Array.get()
Modify and enable old Array-Tests
Test cases for Array-constructor