.travis.yml in active_zuora-2.5.0 vs .travis.yml in active_zuora-2.5.1

- old
+ new

@@ -1,8 +1,7 @@
 rvm:
-- 1.9.3
-- 2.0.0
-- 2.1.2
+- 2.2
+- 2.3
 env:
   global:
   - secure: ZFQj4fzF4wTAd0PTVT7scZZC8z572SsHC1364PqxO5aAgeR2GODUkMcqIpiQ1mFr14c2NZbtT6krJIexww+/o/XSyiPKuoxZj9BB1bZ0+ei4JV2MSi5sD3Dhnx7k8Tp3Rxvuis2h7VUSILGdSo47KImWAFDtdVwO7s2LAMTfTsk=
   - secure: NCKEWiLo7lemfhP1ivwXPr07p1cuSnquH9IJTA7EpyayhBgLrjwhgYOJ/v/pCHfthji2Qylv34MbqzNxcfYW/xaBnM9ytsNwdrHDlnLv+cDuSjRYla4eXplbVeEcsfrdadbbf6LuNRtV3nwvtKEESc0VcCyvY6AmdKlfpbYwDbs=