added launcher.html

launcher.html now cares for notification or app launch. Deleted that
code in debug.html.
index.html can now handle params, too

Still am tasting with debug.html, though.
fixed parameter transfer from icon to app

added applicationevent for windowParamsChangeHandler
less logging in service
service won't transmit complete manifest to app

only changes that are needed are not transfered.
fixed notification icon

Now the icon appears as it should.
fixed dashboard path for 2.x webOS

probably not so important.
updated readme to reflect latest changes.