Be more nodeish... package.json and gitignore

Thanks for librato for the package.json (with edits).
This is the start of getting StatsD more integrated with the Node / NPM
Ecosystem. "npm test" now runs the tests, and we have a version number and stuff.

.gitignore

@@ -0,0 +1 @@
+node_modules

package.json

@@ -0,0 +1,24 @@
+{
+  "name": "statsd",
+  "description": "A simple, lightweight network daemon to collect metrics over UDP",
+  "author": "Etsy",
+  "scripts": {
+    "test": "./run_tests.sh"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/etsy/statsd.git"
+  },
+  "version": "0.1.0",
+  "dependencies": {
+  },
+  "devDependencies": {
+    "nodeunit": "0.6.x",
+    "async": "0.1.x",
+    "underscore": "1.2.x",
+    "temp": "0.4.x"
+  },
+  "engine": {
+    "node" : ">=0.4"
+  }
+}