add .gitignore. fix "main" script location. add `npm test`.

.gitignore

@@ -0,0 +1,2 @@
+node_modules
+walk-test

package.json

@@ -1,16 +1,23 @@
 {
-  "name"          : "walk",
-  "description"   : "A node port of python's os.walk",
-  "url"           : "github.com/coolaj86/node-walk",
-  "keywords"      : ["util", "os", "sys", "fs", "walk", "walkSync"],
-  "author"        : "AJ ONeal <coolaj86@gmail.com>",
-  "contributors"  : [],
-  "dependencies"  : {
+  "name": "walk",
+  "description": "A node port of python's os.walk",
+  "url": "http://github.com/coolaj86/node-walk",
+  "keywords": [
+    "util",
+    "os",
+    "sys",
+    "fs",
+    "walk",
+    "walkSync"
+  ],
+  "author": "AJ ONeal <coolaj86@gmail.com>",
+  "contributors": [],
+  "dependencies": {
     "forEachAsync": "~2.2"
   },
-  "lib"           : ".",
-  "main"          : "./walk.js",
-  "version"       : "2.3.0-alpha2",
+  "lib": ".",
+  "main": "./lib/walk.js",
+  "version": "2.3.1",
   "repository": {
     "url": "git://github.com/coolaj86/node-walk.git"
   },
@@ -23,5 +30,17 @@
       "type": "Apache2",
       "url": "http://opensource.org/licenses/apache2.0.php"
     }
-  ]
+  ],
+  "bugs": {
+    "url": "https://github.com/coolaj86/node-walk/issues"
+  },
+  "homepage": "https://github.com/coolaj86/node-walk",
+  "directories": {
+    "example": "examples",
+    "test": "test"
+  },
+  "devDependencies": {},
+  "scripts": {
+    "test": "./test/walk-test.sh"
+  }
 }