Breaks with builds outside of project root

If you use something like gulp or grunt to 'build' you app to a different directory (say ./build), it fails to find the package.json file because it's not copied to the build directory.

Check lib/health.js line 8. Should probably use process.cwd() in this case.

var pjson = require(process.cwd() + path.sep +'package.json');

[kevinludwig]

+1 I ran into this also. Actually there is an existing nam package that solves this:

https://www.npmjs.com/package/app-root-path

Which uses multiple strategies to find the app root. The main strategy is to do:

path.resolve(__dirname).split('/node_modules')[0];

but the fallback strategy is to do:

path.dirname(require.main.filename);

Anyway I've verified that this works. Currently koa-ping will break when it runs under gulp (e.g. when I'm trying to execute my tests).