.travis.yml in clearance-1.12.1 vs .travis.yml in clearance-1.13.0

@@ -16,11 +16,9 @@
   - gemfiles/rails41.gemfile
   - gemfiles/rails42.gemfile
   - gemfiles/rails50.gemfile
 
 matrix:
-  allow_failures:
-    - gemfile: gemfiles/rails50.gemfile
   exclude:
     - rvm: 1.9.3
       gemfile: gemfiles/rails50.gemfile
     - rvm: 2.0.0
       gemfile: gemfiles/rails50.gemfile