Added NodeMetadata class

package.json

@@ -19,11 +19,11 @@
     "javascript-obfuscator": "./bin/javascript-obfuscator"
   },
   "dependencies": {
-    "@babel/runtime": "7.0.0-beta.40",
+    "@babel/runtime": "7.0.0-beta.41",
     "chalk": "2.3.2",
     "chance": "1.0.13",
     "class-validator": "0.8.1",
-    "commander": "2.14.1",
+    "commander": "2.15.0",
     "escodegen-wallaby": "1.6.18",
     "esprima": "4.0.0",
     "estraverse": "4.2.0",
@@ -40,9 +40,10 @@
     "tslib": "1.9.0"
   },
   "devDependencies": {
-    "@babel/core": "7.0.0-beta.40",
-    "@babel/plugin-transform-runtime": "7.0.0-beta.40",
-    "@babel/preset-env": "7.0.0-beta.40",
+    "@babel/cli": "7.0.0-beta.41",
+    "@babel/core": "7.0.0-beta.41",
+    "@babel/plugin-transform-runtime": "7.0.0-beta.41",
+    "@babel/preset-env": "7.0.0-beta.41",
     "@types/chai": "4.1.2",
     "@types/chance": "1.0.0",
     "@types/escodegen": "0.0.6",
@@ -53,13 +54,12 @@
     "@types/mkdirp": "0.5.2",
     "@types/mocha": "2.2.48",
     "@types/multimatch": "2.1.2",
-    "@types/node": "9.4.6",
+    "@types/node": "9.4.7",
     "@types/rimraf": "2.0.2",
     "@types/sinon": "4.3.0",
     "@types/string-template": "1.0.2",
     "@types/webpack-env": "1.13.5",
-    "awesome-typescript-loader": "5.0.0-0",
-    "babel-cli": "7.0.0-beta.3",
+    "awesome-typescript-loader": "5.0.0-1",
     "babel-loader": "8.0.0-beta.2",
     "chai": "4.1.2",
     "coveralls": "3.0.0",
@@ -67,16 +67,16 @@
     "mocha": "5.0.4",
     "pre-commit": "1.2.2",
     "rimraf": "2.6.2",
-    "sinon": "4.4.2",
+    "sinon": "4.4.6",
     "threads": "0.10.1",
     "ts-node": "5.0.1",
     "tslint": "5.9.1",
     "tslint-eslint-rules": "5.1.0",
     "tslint-language-service": "0.9.8",
     "tslint-webpack-plugin": "1.2.0",
-    "typescript": "2.7.2",
+    "typescript": "2.8.0-dev.20180315 ",
     "webpack": "4.1.1",
-    "webpack-cli": "2.0.10",
+    "webpack-cli": "2.0.12",
     "webpack-node-externals": "1.6.0"
   },
   "repository": {