Exclude tests from shipped npm package (#10)

pwfisher · tomdale · commit 1bd5e26e6cdd · 2016-07-19T12:13:06.000-04:00
```
$ du -sh node_modules/fastboot*/test
5.7M	node_modules/fastboot-app-server/test
 17M	node_modules/fastboot-express-middleware/test
 27M	node_modules/fastboot/test
```
diff --git a/.npmignore b/.npmignore
@@ -0,0 +1,4 @@
+.gitignore
+.jshintrc
+.travis.yml
+test
