Upgrade rspec-core to fix compat with Rake 11.0

mikejohn857 · mikejohn857 · commit 184c60997276 · 2016-03-09T17:25:41.000-08:00
See: rspec/rspec-core#2197
diff --git a/Gemfile b/Gemfile
@@ -5,5 +5,6 @@ gemspec
 
 group :cucumber do
   gem "cucumber"
-  gem "rspec", "~> 3.0.0"
+  gem "rspec"
+  gem "rspec-core", "~> 3.4.4"
 end
