Fix: When moving figure kept on standing on old field and also moved

There was some issue in the canMove() method of some figures. They
changed the coordinates via the increase methods so after the canMove()
the coordinates were different.
I copied the coordinates now and then do the calculating.
Add notification when exception occurs
adding comments
Merge pull request #14 from flackbash/master

Seems to finish King and fix Bishop and Queen
adding hint
solving coordinates issue
Converting to Maven
update
update
adding info
Use jline.

Switching from SCANNER.in to jline, so we can have commandline history
and autocompletion.
Update README

and disable test for now.
Add example EngineHandler
Merge pull request #15 from fluxroot/master

Add example EngineHandler
Converted to Gradle
Update gitignore
Knight.java: finished canMove(), involves issue #1