Redo test structure to seperate node/browser tests

test/browser/integration.js

@@ -0,0 +1,2 @@
+import test from 'ava';
+import whenDomReady from '../../';

test/types.js → test/node/types.js

@@ -1,5 +1,5 @@
 import test from 'ava';
-import whenDomReady from '../';
+import whenDomReady from '../../';
 
 test('whenDomReady is a function', t => {
 	t.is(typeof whenDomReady, 'function');

test/unit.js → test/node/unit.js

@@ -1,6 +1,6 @@
 import test from 'ava';
 import jsdom from 'jsdom';
-import whenDomReady from '../';
+import whenDomReady from '../../';
 
 test.cb('callback fires with global document', t => {
 	t.plan(1);