.travis.yml in terraforming-0.7.0 vs .travis.yml in terraforming-0.8.0

@@ -1,10 +1,9 @@
 language: ruby
 rvm:
-- 2.3.0
-- 2.2.4
-- 2.1.8
-- 2.0
+- 2.3.1
+- 2.2.5
+- 2.1.10
 env:
 - secure: n0mxwnyjuXI4mJO4mp++2TnsPJ+XgCF/J1U2L5piE5j3xMhSU+5V0JrA1uFlS0Pemb44M7BjgmF9S4G35BwyAQpctpCYhqy9tFa6+Y6nxEv5hCv2cZz7BSAZM6eb+zq20409hxTHRaQOr1DBeE4R5S2PrmOXRqvYfTRv3LNSLFk=
 notifications:
   slack:
     secure: iTI8zpxXQJqf5e9ix4buLRsGlf9lJRZqA9Fawdqm41msBrC0Zsp31XzBS7ZPiTcdHhImtOC4lccTCW2C8kR6waaG5VOF0U2BwyKaNFKsXMaVk6yrNhYkvJ9YVicuU9hL+JKLyBrSDYQ7+vXcHqaz4H4dYpPThrv6sfq4jBOp+eM=