update .gitignore

node_modules/git-node-fs/README.md

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+git-node-fs
+===========
+
+A node adapter for the fs-db mixin for [js-git].
+This enables access to Git repositories on the filesystem using Node.js.
+
+```js
+var repo = {};
+repo.rootPath = path.join(__dirname, ".git");
+var fs = require("git-node-fs");
+require("js-git/mixins/fs-db")(repo, fs);
+```
+
+Or use the provided mixin directly.
+
+```js
+var repo = {};
+var path = path.join("some/bare/repo.git");
+require('git-node-fs/mixins/fs-db')(repo, path);
+```
+
+[js-git]: https://github.com/creationix/js-git
+