.travis.yml in carrierwave-ftp-0.3.0 vs .travis.yml in carrierwave-ftp-0.3.1

- old
+ new

@@ -4,22 +4,15 @@
  - gem update bundler
 
 cache: bundler
 
 rvm:
- - 2.0
- - 2.1
- - 2.2.3
+ - 2.3
+ - 2.4
  - ruby-head
- - jruby
- - jruby-head
 
-env:
-  - JRUBY_OPTS="--2.0"
-
 sudo: false
 
 matrix:
   allow_failures:
     - rvm: ruby-head
-    - rvm: jruby-head
   fast_finish: true