Test: Travis run job in parallel

And re-add nvim to the Dockerfile

.travis.yml

@@ -20,8 +20,23 @@ before_install:
     else docker build --tag vimwiki .;
     fi
 
+env:
+  # Define jobs <- vim version <- hard copied from Dockerfile
+  # First to be launched
+  - VIM_VERSION=vim_7.3.429
+  - VIM_VERSION=nvim_0.2.2
+  # More
+  - VIM_VERSION=vim_7.4.1099
+  - VIM_VERSION=vim_7.4.1546
+  - VIM_VERSION=vim_8.0.0027
+  - VIM_VERSION=vim_8.1.0519
+  - VIM_VERSION=nvim_0.3.8
+
 script:
   # Run All tests
   - pushd test
-  - bash run_tests.sh
+  - bash run_tests.sh -v -n "$VIM_VERSION"
   - popd
+
+
+# vim:sw=2: