Update Maryland Open Data Policy status

State of Maryland signed into law their open data policy on [April 8, 2014](http://mgaleg.maryland.gov/webmga/frmMain.aspx?pid=billpage&stab=03&id=sb0644&tab=subject3&ys=2014RS).

Law became effective on [June 1, 2014] (http://mgaleg.maryland.gov/webmga/frmMain.aspx?pid=billpage&stab=01&id=SB0644&tab=subject3&ys=2014rs).