Registering MetricRegistry with Application during run()

DW 0.7.1 fixed the issue of 0.7.0 in which the internal DW MetricRegistry wasn't easily accessible
Now using that in the ```run()``` by that removing the need for calling the ```super() ``` on your own ```initalize``` method - which is a "gotcha! " which has caused many annoyances when upgrading from DW 0.6.2 to 0.7.1

**Also changed the versioning pattern so it would be easier to know which DW version this is compatible with.  I find it nicer for libs that follow another one. let me know if that's good by You.