Update timeout and ruby version

.travis.yml

@@ -1,6 +1,6 @@
 language: ruby
 rvm:
-  - 1.9.3
+  - 2.6
 sudo: false
 addons:
   apt:

spec/loading_spec.rb

@@ -11,7 +11,7 @@ describe "My Vim plugin" do
 
   extensions.each do |ext|
     it "should parse #{ext} file" do
-      Timeout::timeout(15) do
+      Timeout::timeout(20) do
         write_file "#{ext}", ""
         vim.edit "#{ext}"
         vim.insert "sample"