* Accept use of Meteor 3.1.2

Author: BastienRodz

package.js

@@ -6,7 +6,7 @@ Package.describe({
 });
 
 Package.onUse(function(api) {
-  api.versionsFrom(['2.9.0', '3.0']);
+  api.versionsFrom(['2.9.0', '3.0', '3.1.2']);
   api.use('ecmascript');
   api.use(['check', 'mongo', 'logging'], 'server');
   api.mainModule('migrations_server.js', 'server');