Merge pull request #7 from dlthomas/8b229df5b47063d18777cca26359d21308b21127

Update to work with latest Yesod
version bump
allow persistent 1.1
Merge pull request #9 from gregwebs/master

allow persistent 1.1 & future persistents
version bump
Merge branch 'master' of git://github.com/pbrisbin/yesod-markdown

Conflicts:
	yesod-markdown.cabal

update constraints to work with latest persistent as done upstream