fix: use 30s default for timeout as per README

PR-URL: #20
Credit: @h4l
Close: #20
Reviewed-by: @isaacs

config.js

@@ -75,7 +75,9 @@ module.exports = figgyPudding({
   'scope': {},
   'spec': {},
   'strict-ssl': {},
-  'timeout': {},
+  'timeout': {
+    default: 30 * 1000
+  },
   'user-agent': {
     default: `${
       pkg.name

test/config.js

@@ -0,0 +1,32 @@
+'use strict'
+
+const config = require('../config.js')
+const npmlog = require('npmlog')
+const { test } = require('tap')
+
+npmlog.level = process.env.LOGLEVEL || 'silent'
+
+test('isFromCI config option', t => {
+  const CI = process.env.CI
+  process.env.CI = false
+  t.teardown(t => {
+    process.env.CI = CI
+  })
+  const OPTS = config({
+    log: npmlog,
+    timeout: 0,
+    registry: 'https://mock.reg/'
+  })
+  t.notOk(OPTS.isFromCI, 'should be false if not on a CI env')
+  t.end()
+})
+
+test('default timeout', t => {
+  const DEFAULT_OPTS = config({})
+  t.equal(DEFAULT_OPTS.timeout, 30 * 1000, 'default timeout is 30s')
+  const SPECIFIED_OPTS = config({
+    timeout: 15 * 1000
+  })
+  t.equal(SPECIFIED_OPTS.timeout, 15 * 1000, 'default timeout can be overridden')
+  t.end()
+})