Use camelCase variables on custom_css, custom_js and custom_scss (#434)

* Rename custom_css variable to customCSS

* Rename custom_js variable to customJS

* Change contribuitors.md

* Rename custom_scss to customSCSS

* Add custom SCSS on example config.toml

* Add customSCSS on stackbit.yaml

exampleSite/config.toml

@@ -52,10 +52,13 @@ disqusShortname = "yourdiscussshortname"
     enableTwemoji = true
 
     # Custom CSS
-    custom_css = []
+    customCSS = []
+
+    # Custom SCSS
+    customSCSS = []
 
     # Custom JS
-    custom_js = []
+    customJS = []
 
 # If you want to use fathom(https://usefathom.com) for analytics, add this section
 [params.fathomAnalytics]
@@ -141,6 +144,7 @@ disqusShortname = "yourdiscussshortname"
 
     [languages.pt-br]
         languagename = "Português"
+        languageinitials = "BR"
         title = "João Ninguém"
 
         [languages.pt-br.params]