fix gemfile

math2001 · math2001 · commit 737369cf0959 · 2019-04-28T16:46:10.000+10:00
i changed it manually earlier because I have 2.6.2 install on my machine
diff --git a/Gemfile b/Gemfile
@@ -1,5 +1,5 @@
 source 'https://rubygems.org'
-ruby '2.6.2'
+ruby '2.6.0'
 
 gem 'rake'
 gem 'thor'
