Update README.md: account for mpcdf gitlab update (allowing for more recent runner versions)

README.md

@@ -12,9 +12,11 @@ Important things:
 
 
 ## Setup a local runner:
-- Installation of a local runner [found here](https://docs.gitlab.com/runner/install/) be sure to install the version <= 1.11.4  
-  `sudo apt-get install gitlab-ci-multi-runner=1.11.4`  
-  since the mpcdf gitlab version is 8.17
+- Installation of a local runner [found here](https://docs.gitlab.com/runner/install/) be sure to install the version ~~<= 1.11.4~~   
+  compatible with the mpcdf gitlab version (which is 9.1.4 since 15.05.2017), a compatibility chart can be 
+  [found here](https://gitlab.com/gitlab-org/gitlab-ci-multi-runner/blob/master/README.md)  
+  `sudo apt-get install gitlab-ci-multi-runner`  
+  or, for installing a specific version, `sudo apt-get install gitlab-ci-multi-runner=1.11.4` 
 - After installation of the runner, execute **in your home directory**  
   `gitlab-runner register`  
   follow the steps with the url and token given on the `Settings->CI/CD pipeline` of your project on the gitlab page