Merge branch 'make-instructions-obvious' into 'master'

Make instructions obvious

/cc @jacobvosmaer

See merge request !1

doc/install/README.md

 # Installing GitLab Runner
-Below we describe the one-time steps you need to perform to set up a new
-gitlab-runner instance, after [downloading](downloads.md) and installing the
-GitLab Runner omnibus package.
-## Ubuntu 12.04, 14.04
-```
+## Ubuntu 14.04 (for Ubuntu 12.04 and other operating systems please check the other [downloads](downloads.md)
+```bash
+# Download the package
+wget https://s3-eu-west-1.amazonaws.com/downloads-packages/ubuntu-14.04/gitlab-runner_5.1.0~pre.omnibus.1-1_amd64.deb
+
+# Install the package
+sudo dpkg -i gitlab-runner_5.1.0~pre.omnibus.1-1_amd64.deb
 # Create the user that will run your builds
 sudo useradd -s /bin/false -m -r gitlab-runner
 # Register your runner instance with a GitLab CI Coordinator
 sudo /opt/gitlab-runner/bin/setup -C /home/gitlab-runner
-# Install and start the gitlab-runner Upstart script
+# Install the gitlab-runner Upstart script
 sudo cp /opt/gitlab-runner/doc/install/upstart/gitlab-runner.conf /etc/init/
+
+# Start the gitlab-runner Upstart script
 sudo service gitlab-runner start
 ```