Add Ruby 2.6 and 2.7 to test target

eagletmt · yugui · commit 65e8150002be · 2020-07-02T12:56:12.000+09:00
diff --git a/.travis.yml b/.travis.yml
@@ -12,4 +12,12 @@ matrix:
     rvm: 2.5.1
   - os: osx
     rvm: 2.5.1
+  - os: linux
+    rvm: 2.6.6
+  - os: osx
+    rvm: 2.6.6
+  - os: linux
+    rvm: 2.7.1
+  - os: osx
+    rvm: 2.7.1
   fast_finish: true
