Remove ignore key from package.json

package.json

@@ -2,11 +2,6 @@
   "name": "xterm",
   "description": "Full xterm terminal, in your browser",
   "version": "3.3.0",
-  "ignore": [
-    "demo",
-    "test",
-    ".gitignore"
-  ],
   "main": "lib/Terminal.js",
   "types": "typings/xterm.d.ts",
   "repository": "https://github.com/xtermjs/xterm.js",
@@ -61,6 +56,5 @@
     "coveralls": "gulp coveralls",
     "webpack": "gulp webpack",
     "watch": "gulp watch"
-  },
-  "dependencies": {}
+  }
 }