Move regenerateEvery code from setConfig to generate to avoid stacking
Added outdated message when local docpad version isn't the same as the global version
v6.48.0. Improvement.

- v6.48.0 August 5, 2013
	- Moved `regenerateEvery` timer into `generate` rather than
`setConfig` to avoid action stacking
	- DocPad will now warn you when your project's local DocPad version
does not match the global version