.travis.yml in clamrb-0.0.3 vs .travis.yml in clamrb-0.0.4

@@ -4,9 +4,10 @@
   - 2.1
   - 2.2
   - 2.3
   - 2.4
   - 2.5
+  - 2.6
 before_install:
   - sudo apt-get install gcc make pkg-config clamav libclamav-dev clamav-freshclam
   - sudo freshclam