Merge pull request clkao#20 from seegno-forks/enhancement/travis-2-0

Add plv8 2.0 to .travis.yml matrix

Author: clkao

.travis.yml

@@ -7,10 +7,13 @@ before_script:
 env:
   - VERSION=9.4-1.4
   - VERSION=9.4-1.5
+  - VERSION=9.4-2.0
   - VERSION=9.5-1.4
   - VERSION=9.5-1.5
+  - VERSION=9.5-2.0
   - VERSION=9.6-1.4
   - VERSION=9.6-1.5
+  - VERSION=9.6-2.0
 
 language: bash