removed print statement in init(). refactored toString for prettier output.
added silly recursive contains method and overloaded contains(arraylist).
-> nonstatic methods.  removed extraneous methods.
changing character displayed for blank tile
changes to accommodate change of Dictionary staticity
added incorrect print() method
implemented toString()
added newline in init output.  changed contains(list) to more descriptive name indexOfNonWord and added documentation
equals and hashcode stubs/todos
computeScore partial implementation.  Refactoring of init methods.  Extraction of submethods from isLegalState().