Change gitignore to commit tests plugins

.gitignore

@@ -22,7 +22,7 @@ build/Release
 # Dependency directory
 # Deployed apps should consider commenting this line out:
 # see https://npmjs.org/doc/faq.html#Should-I-check-my-node_modules-folder-into-git
-node_modules
+/node_modules
 
 # vim swapfile
 *.swp

test/node_modules/gitbook-plugin-test-config/index.js

@@ -0,0 +1 @@
+module.exports = {};

test/node_modules/gitbook-plugin-test-config/package.json

@@ -0,0 +1,21 @@
+{
+    "name": "gitbook-plugin-test-config",
+    "version": "1.0.0",
+    "engines": {
+        "gitbook": "*"
+    },
+    "gitbook": {
+        "properties": {
+            "myProperty": {
+                "type": "string",
+                "required": true,
+                "title": "This is a required property"
+            },
+            "myDefaultProperty": {
+                "type": "string",
+                "default": "hello",
+                "title": "This is a required property"
+            }
+        }
+    }
+}