Added a post about the upcoming public release of heist

Signed-off-by: Martin Evans <martindevans@gmail.com>
Update 2014-1-1-730-Days-Later.md

Only changed punctuation and capitalised Steam.
Merge pull request #18 from gpevans70/patch-1

Update 2014-1-1-730-Days-Later.md
Merge branch 'To_Be_Proof_Read'