add project runners update/list/add

[burasuk]

var gitlab = require('node-gitlab');

var client = gitlab.createPromise({
  api: 'http://ubuntu/gitlab/api/v4',
  privateToken: '<token>'
});

list project runners

client.projects.runners({
  id: 91
})
.then(projects=>{
  console.log(projects);
})
.catch(err=>{
  console.log(err)
})

Enable runner on project

client.projects.enableRunner({
  id: 91,
  runner_id: 4
})
.then(projects=>{
  console.log(projects);
})
.catch(err=>{
  console.log(err)
})

Disable runner on project

client.projects.disableRunner({
  id: 91,
  runner_id: 4
})