fix: Resolve package.json for version metadata regardless of nesting

The package.json file appears at a different relative location in the source tree versus the compiled package.
It should be resolved regardless of the level of nesting present in the calling module.

Relates to #173

package.json

@@ -49,7 +49,8 @@
  "consumer driven testing"
  ],
  "author": "Matt Fellows <[email protected]> (http://twitter.com/matthewfellows)",
- "contributors": [{
+ "contributors": [
+ {
  "name": "Tarcio Saraiva",
  "email": "[email protected]",
  "url": "http://twitter.com/tarciosaraiva"
@@ -95,6 +96,7 @@
  "lodash.isundefined": "3.0.1",
  "lodash.omit": "^4.5.0",
  "lodash.omitby": "4.6.0",
+ "packpath": "^0.1.0",
  "popsicle": "^9.2.0"
  },
  "devDependencies": {

src/common/logger.ts

@@ -1,7 +1,12 @@
 import * as bunyan from "bunyan";
 const PrettyStream = require("bunyan-prettystream");
 
-const pkg = require("../../package.json");
+const path = require("path");
+const packpath = require("packpath");
+
+// Look up package.json regardless of nesting
+const manifestFile = path.join(packpath.self(), "package.json");
+const pkg = require(manifestFile);
 const prettyStdOut = new PrettyStream();
 prettyStdOut.pipe(process.stdout);