Add lint task to package.json

Author: wingrunr21

package.json

@@ -80,7 +80,8 @@
     "test-debugger": "node ./node_modules/mocha/bin/mocha --timeout 15000 -u tdd ./out/debugger/tests/*.js",
     "postinstall": "node ./node_modules/vscode/bin/install",
     "update-all-grammars": "node scripts/update-all-grammars",
-    "update-grammar": "node scripts/update-grammar atom/language-ruby"
+    "update-grammar": "node scripts/update-grammar atom/language-ruby",
+    "lint": "tslint -c tslint.json 'src/**/*.ts'"
   },
   "activationEvents": [
     "onLanguage:ruby",