build: Configure banana-checker and jsonlint

Change-Id: Ic23af37d4353cfb5f663f84317c862f47ce26637

.gitignore

@@ -41,3 +41,4 @@ modules/MathJax/unpacked/jax/output/SVG/fonts/Neo-Euler
 modules/MathJax/unpacked/jax/output/SVG/fonts/STIX-Web
 tests/browser/.bundle
 tests/browser/.gem
+node_modules/

Gruntfile.js

@@ -0,0 +1,20 @@
+/*jshint node:true */
+module.exports = function ( grunt ) {
+	grunt.loadNpmTasks( 'grunt-banana-checker' );
+	grunt.loadNpmTasks( 'grunt-jsonlint' );
+
+	grunt.initConfig( {
+		banana: {
+			all: 'i18n/'
+		},
+		jsonlint: {
+			all: [
+				'**/*.json',
+				'!node_modules/**'
+			]
+		}
+	} );
+
+	grunt.registerTask( 'test', [ 'jsonlint', 'banana' ] );
+	grunt.registerTask( 'default', 'test' );
+};

package.json

@@ -0,0 +1,12 @@
+{
+  "private": true,
+  "scripts": {
+    "test": "grunt test"
+  },
+  "devDependencies": {
+    "grunt": "0.4.5",
+    "grunt-cli": "0.1.13",
+    "grunt-banana-checker": "0.2.2",
+    "grunt-jsonlint": "1.0.4"
+  }
+}