Adding a package.json.

package.json

+{
+    "name": "CodeMirror",
+    "version":"2.25.0",
+    "main": "codemirror.js",
+    "description": "In-browser code editing made bearable",
+    "licenses": [
+        {
+            "type": "MIT",
+            "url": "http://codemirror.net/LICENSE"
+        }
+    ],
+    "directories": {
+        "lib": "./lib"
+    },
+    "bugs": "http://github.com/marijnh/CodeMirror2/issues",
+    "keywords": ["JavaScript", "CodeMirror", "Editor"],
+    "homepage": "http://codemirror.net",
+    "maintainers":[ {
+        "name": "Marijn Haverbeke",
+        "email": "marijnh@gmail.com",
+        "web": "http://codemirror.net"
+    }],
+    "repositories": [
+        {
+            "type": "git",
+            "url": "https://github.com/marijnh/CodeMirror2.git"
+        }
+    ]
+}