fix: use 30s default for timeout as per README

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

Author: h4l

config.js

@@ -69,7 +69,9 @@ module.exports = figgyPudding({
   scope: {},
   spec: {},
   'strict-ssl': {},
-  timeout: {},
+  timeout: {
+    default: 30 * 1000
+  },
   'user-agent': {
     default: `${
       pkg.name

test/config.js

@@ -20,3 +20,13 @@ test('isFromCI config option', t => {
   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()
+})