update async functions

ts/npmci.config.ts

@@ -4,16 +4,14 @@ import * as plugins from './npmci.plugins'
 import * as paths from './npmci.paths'
 
 export interface INpmciOptions {
-    globalNpmTools: string[]
+  globalNpmTools: string[]
 }
 
-export let getConfig = () => {
-    let done = q.defer<INpmciOptions>()
-    let npmciNpmextra = new plugins.npmextra.Npmextra(paths.cwd)
-    let defaultConfig: INpmciOptions = {
-        globalNpmTools: []
-    }
-    let npmciConfig = npmciNpmextra.dataFor<INpmciOptions>('npmci', defaultConfig)
-    done.resolve(npmciConfig)
-    return done.promise
+export let getConfig = async (): Promise<INpmciOptions> => {
+  let npmciNpmextra = new plugins.npmextra.Npmextra(paths.cwd)
+  let defaultConfig: INpmciOptions = {
+    globalNpmTools: []
+  }
+  let npmciConfig = npmciNpmextra.dataFor<INpmciOptions>('npmci', defaultConfig)
+  return npmciConfig
 }