Starting message

There is a problem with current ruby-debug-ide and debugger-xml architecture: IDE has no idea when it can connect to debugger (there is no signal that debugger server is ready).
Currently RM uses hack to workaround the problem: it waits for specific message in debugger's output.
Thus I've added similar message to debugger-xml.

BTW I've bumped version up so you do not have to do this yourself ;)