added unit testing, and started implementing unit tests...phew

node_modules/which/package.json

@@ -0,0 +1,67 @@
+{
+  "_from": "which@1.3.1",
+  "_id": "which@1.3.1",
+  "_inBundle": false,
+  "_integrity": "sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==",
+  "_location": "/which",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "version",
+    "registry": true,
+    "raw": "which@1.3.1",
+    "name": "which",
+    "escapedName": "which",
+    "rawSpec": "1.3.1",
+    "saveSpec": null,
+    "fetchSpec": "1.3.1"
+  },
+  "_requiredBy": [
+    "/cross-spawn",
+    "/global-prefix",
+    "/mocha"
+  ],
+  "_resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
+  "_shasum": "a45043d54f5805316da8d62f9f50918d3da70b0a",
+  "_spec": "which@1.3.1",
+  "_where": "/Users/josh.burman/Projects/braid/node_modules/mocha",
+  "author": {
+    "name": "Isaac Z. Schlueter",
+    "email": "i@izs.me",
+    "url": "http://blog.izs.me"
+  },
+  "bin": {
+    "which": "./bin/which"
+  },
+  "bugs": {
+    "url": "https://github.com/isaacs/node-which/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "isexe": "^2.0.0"
+  },
+  "deprecated": false,
+  "description": "Like which(1) unix command. Find the first instance of an executable in the PATH.",
+  "devDependencies": {
+    "mkdirp": "^0.5.0",
+    "rimraf": "^2.6.2",
+    "tap": "^12.0.1"
+  },
+  "files": [
+    "which.js",
+    "bin/which"
+  ],
+  "homepage": "https://github.com/isaacs/node-which#readme",
+  "license": "ISC",
+  "main": "which.js",
+  "name": "which",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/isaacs/node-which.git"
+  },
+  "scripts": {
+    "changelog": "bash gen-changelog.sh",
+    "postversion": "npm run changelog && git add CHANGELOG.md && git commit -m 'update changelog - '${npm_package_version}",
+    "test": "tap test/*.js --cov"
+  },
+  "version": "1.3.1"
+}