added official image for Source Mage GNU/Linux

library/sourcemage

@@ -0,0 +1,4 @@
+# maintainer: Vlad Glagolev <[email protected]> (@vaygr)
+
+latest: git://github.com/vaygr/docker-sourcemage@9f3fb9798195f0a294bfb3a5c41f9affccece740 stable
+0.61: git://github.com/vaygr/docker-sourcemage@9f3fb9798195f0a294bfb3a5c41f9affccece740 stable