u3d.gemspec in u3d-1.0.6 vs u3d.gemspec in u3d-1.0.7

- old
+ new

@@ -8,9 +8,11 @@
   spec.name        = 'u3d'
   spec.version     = U3d::VERSION
   spec.authors     = ["Jerome Lacoste", "Paul Niezborala"]
   spec.email       = 'jerome@wewanttoknow.com'
 
+  spec.required_ruby_version = '>= 2.1.0'
+
   spec.summary     = "U3d"
   spec.description = U3d::DESCRIPTION
 
   spec.homepage    = 'https://github.com/DragonBox/u3d'
   spec.license     = 'MIT'