.travis.yml in fit-parser-0.0.2 vs .travis.yml in fit-parser-0.0.3

@@ -1,10 +1,11 @@
 language: ruby
 rvm:
   - ruby-head
+  - 2.4.0
+  - 2.3
   - 2.2
   - 2.1
   - 2.0.0
-  - 1.9.3
 branches:
   only:
     - master