feat(get-config): get config from greenkeeper config file if present

rather then from root package.json

lib/get-config.js

@@ -2,7 +2,9 @@ const _ = require('lodash')
 const { defaultCommitMessages } = require('./default-commit-messages')
 
 module.exports = repository => {
-  const config = _.get(
+  const config = _.has(repository, 'greenkeeper')
+  ? _.get(repository, 'greenkeeper')
+  : _.get(
     repository,
     ['packages', 'package.json', 'greenkeeper'],
     {}

test/lib/get-config.js

@@ -29,6 +29,52 @@ test('get default config', () => {
   expect(getConfig(repository)).toEqual(expected)
 })
 
+test('get config from  root greenkeeper section', () => {
+  expect.assertions(1)
+
+  const repository = {
+    packages: {
+      'package.json': {}
+    },
+    greenkeeper: {
+      groups: {
+        backend: {
+          ignore: [
+            'lodash'
+          ],
+          packages: [
+            'apps/backend/hapiserver/package.json'
+          ]
+        }
+      }
+    }
+  }
+
+  const expected = {
+    label: 'greenkeeper',
+    branchPrefix: 'greenkeeper/',
+    ignore: [],
+    commitMessages: {
+      initialBadge: 'docs(readme): add Greenkeeper badge',
+      initialDependencies: 'chore(package): update dependencies',
+      initialBranches: 'chore(travis): whitelist greenkeeper branches',
+      dependencyUpdate: 'fix(package): update ${dependency} to version ${version}',
+      devDependencyUpdate: 'chore(package): update ${dependency} to version ${version}',
+      dependencyPin: 'fix: pin ${dependency} to ${oldVersion}',
+      devDependencyPin: 'chore: pin ${dependency} to ${oldVersion}',
+      closes: '\n\nCloses #${number}'
+    },
+    groups: {
+      backend: {
+        ignore: ['lodash'],
+        packages: ['apps/backend/hapiserver/package.json']
+      }
+    }
+  }
+
+  expect(getConfig(repository)).toMatchObject(expected)
+})
+
 test('get custom commit message', () => {
   expect.assertions(1)