.travis.yml in ndr_support-4.1.2 vs .travis.yml in ndr_support-4.2.0

@@ -1,21 +1,20 @@
 language: ruby
 
 rvm:
-  - 2.1.8
-  - 2.2.4
-  - 2.3.0
+  - 2.2.5
+  - 2.3.1
 
 gemfile:
   - gemfiles/Gemfile.rails32
   - gemfiles/Gemfile.rails41
   - gemfiles/Gemfile.rails42
 
 sudo: false
 
 cache: bundler
 
-before_install: "rm ${BUNDLE_GEMFILE}.lock"
+before_install: "rm -f ${BUNDLE_GEMFILE}.lock"
 
 before_script: "bundle update"
 
 script: "bundle exec rake test"