Introduce grunt

.gitignore

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+# npm modules
+node_modules

.travis.yml

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+language: node_js
+
+before_script:
+- npm install -g grunt-cli

Gruntfile.coffee

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+
+module.exports = (grunt) ->
+
+    grunt.initConfig
+
+        jshint:
+
+            c3: 'c3.js'
+            spec: 'spec/*.js'
+            options:
+                jshintrc: '.jshintrc'
+
+        jasmine:
+
+            c3:
+                src: 'c3.js'
+                options:
+                    specs: 'spec/*.js'
+
+    grunt.loadNpmTasks 'grunt-contrib-jshint'
+    grunt.loadNpmTasks 'grunt-contrib-jasmine'
+
+    grunt.registerTask 'default', ['jshint', 'jasmine']

package.json

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+{
+  "name": "c3",
+  "version": "0.1.0",
+  "description": "D3-based reusable chart library",
+  "main": "c3.js",
+  "scripts": {
+    "test": "grunt"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/masayuki0812/c3.git"
+  },
+  "keywords": [
+    "d3",
+    "chart",
+    "graph"
+  ],
+  "author": "Masayuki Tanaka",
+  "license": "MIT",
+  "gitHead": "84e03109d9a590f9c8ef687c03d751f666080c6f",
+  "readmeFilename": "README.md",
+  "devDependencies": {
+    "grunt": "~0.4.1",
+    "grunt-contrib-jshint": "~0.7.1",
+    "grunt-contrib-jasmine": "~0.5.2"
+  }
+}

spec/c3-spec.js

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+
+var describe = window.describe;
+var expect = window.expect;
+var it = window.it;
+
+var c3 = window.c3;
+
+describe('c3', function () {
+    'use strict';
+
+    it('exists', function () {
+
+        expect(c3).not.toBe(null);
+        expect(typeof c3).toBe('object');
+
+    });
+
+    // ...write other tests here
+
+});