Add .env support for rednering context

Add google analytics code

Author: modularcoder

.gitignore

@@ -24,3 +24,4 @@ npm-debug.log
 
 *.iml
 /dist
+/.env

build/tasks/app-pages.js

@@ -5,6 +5,7 @@ var through = require('through2');
 var File = require('vinyl');
 var StringDecoder = require('string_decoder').StringDecoder;
 var extend 	= require('util')._extend;
+var dotenv = require('dotenv');
 
 var frontMatter = require('front-matter');
 var handlebars = require('handlebars');
@@ -152,6 +153,8 @@ function setFrontMatter(file) {
 	This function returns context of current page 
 	which is root context extended by all contexts untill
 	current level context
+
+	You may also use .env file in root folder
 */
 
 
@@ -160,6 +163,15 @@ function getPageContextExternal(file) {
 	// Initial context
 	var context = {};
 
+	// Environmental variables
+	env = dotenv.config({
+		silent: true,
+		path: path.resolve(config.rootDir, '.env')
+	});
+
+	// 
+	extend(context, env);
+
 	// Package data
 	context.pkg = require('../../package.json');
 

package.json

@@ -12,8 +12,10 @@
     "url": "https://github.com/modularcode/modular-admin-html/issues"
   },
   "homepage": "https://github.com/modularcode/modular-admin-html",
-  "dependencies": {},
+  "dependencies": {
+  },
   "devDependencies": {
+    "dotenv": "^2.0.0",
     "front-matter": "^2.0.5",
     "fs-extra": "^0.26.4",
     "glob": "^5.0.14",

src/_main-layout.hbs

@@ -40,6 +40,19 @@ title: ModularAdmin - Free Dashboard Theme | HTML Version
 				<div class="color-secondary"></div>
 			</div>
 		</div>
+		{{!-- Google Analytics  code if GOOGLE_ANALYTICS_ID id available --}}
+		{{#if GOOGLE_ANALYTICS_ID}}
+			<script>
+			  (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
+			  (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
+			  m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
+			  })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
+
+			  ga('create', '{{GOOGLE_ANALYTICS_ID}}', 'auto');
+			  ga('send', 'pageview');
+
+			</script>
+		{{/if}}
 		<script src="js/vendor.js"></script>
 		<script src="js/app.js"></script>
 	</body>