Use Hugo's internal templates for Google Analytics (GA) (#36)3.0.0

* Use Hugo's internal templates for Google Analytics (GA)

This commit does the following:
 * Removes a hardcoded Google Analytics ID
 * Converts the layout to use Hugo's internal GA teamplate
 * Removes the configuration items from the example site
 * Adds a section to the README about what internal templates are
   supported.

For more info about the GA internal template, see this URL:
https://gohugo.io/templates/internal/#configure-google-analytics

Signed-off-by: Michael Bergeron <mikeb.code@gmail.com>

* Add Google Analytics config into exampleSite

* Add google analytics template to single.html

* Bump version to 3.0.0

Breaking change based on google analytics configuration

9 files changed, 13 insertions, 17 deletions

diff --git a/README.md b/README.md
index 3e31094..fbbe817 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,12 @@ See the demo's configuration as an example:
 
 https://github.com/curttimson/hugo-theme-massively/blob/master/exampleSite/config-prod.toml
 
+#### Hugo Internal Templates
+
+The theme currently also supports the following ["internal templates" supplied by Hugo](https://gohugo.io/templates/internal/)
+
+ - [Google Analytics](https://gohugo.io/templates/internal/#configure-google-analytics)
+
 ### Cover Image
 
 The cover image URL is hard-coded, therefore to replace this add an image to the following location in your Hugo application:
diff --git a/exampleSite/config-prod.toml b/exampleSite/config-prod.toml
index f7b7c87..1ddd58e 100644
--- a/exampleSite/config-prod.toml
+++ b/exampleSite/config-prod.toml
@@ -2,6 +2,7 @@ languageCode = "en-us"
 title = "Massively"
 baseURL = "https://hugo-theme-massively.netlify.com/"
 theme = "../.."
+googleanalytics = "UA-113904582-4"
 
 # [params]
   # set below parameter to define a favicon
@@ -14,7 +15,6 @@ theme = "../.."
 #     featuredpost = "true"
 
 [params.settings]
-    googleanalytics = "UA-113904582-4"
     disqus = "hugo-massively"
 
 [languages]
diff --git a/exampleSite/config.toml b/exampleSite/config.toml
index 4e4cbd0..902552c 100644
--- a/exampleSite/config.toml
+++ b/exampleSite/config.toml
@@ -2,6 +2,7 @@ languageCode = "en-us"
 title = "Massively"
 baseURL = "http://localhost:1313/"
 theme = "../.."
+googleanalytics = "UA-113904582-3"
 
 # [params]
   # set below parameter to define a favicon
@@ -14,7 +15,6 @@ theme = "../.."
 #     featuredpost = "true"
 
 [params.settings]
-    googleanalytics = "UA-113904582-3"
     disqus = "hugo-massively"
 
 [languages]
diff --git a/layouts/_default/single.html b/layouts/_default/single.html
index f1b3f27..5860e0b 100644
--- a/layouts/_default/single.html
+++ b/layouts/_default/single.html
@@ -36,7 +36,8 @@
                     {{ partial "footer/index" . }}
                     {{ partial "copyright" . }}
 
-			</div>
+            </div>
+            {{ template "_internal/google_analytics.html" . }}
             {{ partial "scripts/index" . }}
 	</body>
 </html>
diff --git a/layouts/index.html b/layouts/index.html
index b45fb1c..ae90e4d 100644
--- a/layouts/index.html
+++ b/layouts/index.html
@@ -60,6 +60,7 @@
 					{{ partial "copyright" . }}
 			</div>
 
+			{{ template "_internal/google_analytics.html" . }}
 			{{ partial "scripts/index" . }}
 
 	</body>
diff --git a/layouts/partials/scripts/googleanalytics.html b/layouts/partials/scripts/googleanalytics.html
deleted file mode 100644
index 98a3c47..0000000
--- a/layouts/partials/scripts/googleanalytics.html
+++ /dev/null
@@ -1,11 +0,0 @@
-{{ if .Site.Params.Settings.googleanalytics }}
-<!-- Global site tag (gtag.js) - Google Analytics -->
-<script async src="https://www.googletagmanager.com/gtag/js?id=UA-113904582-1"></script>
-<script>
-  window.dataLayer = window.dataLayer || [];
-  function gtag(){dataLayer.push(arguments);}
-  gtag('js', new Date());
-
-  gtag('config', {{ .Site.Params.Settings.googleanalytics }});
-</script>
-{{ end }}
\ No newline at end of file
diff --git a/layouts/partials/scripts/index.html b/layouts/partials/scripts/index.html
index 92c8ed9..2c4ef29 100644
--- a/layouts/partials/scripts/index.html
+++ b/layouts/partials/scripts/index.html
@@ -6,5 +6,4 @@
 <script src='{{ "assets/js/util.js" | relURL }}'></script>
 <script src='{{ "assets/js/main.js" | relURL }}'></script>
 
-{{ partial "scripts/googleanalytics" . }}
 {{ partial "scripts/disqus" . }}
diff --git a/package-lock.json b/package-lock.json
index d4fb0aa..983a30a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,5 +1,5 @@
 {
   "name": "hugo-theme-massively",
-  "version": "2.2.0",
+  "version": "2.2.2",
   "lockfileVersion": 1
 }
diff --git a/package.json b/package.json
index b0babcc..db589b9 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "hugo-theme-massively",
-  "version": "2.2.2",
+  "version": "3.0.0",
   "description": "HTML5 UP theme Massively for Hugo",
   "main": "index.js",
   "scripts": {