Update circleCI config with modern testing steps

Author: Marlow Payne

CHANGELOG

@@ -5,6 +5,7 @@
   - Migrate JS linting to eslint
   - Migrate SCSS compilation to libsass
   - Lint SCSS with sass-lint
+  - Update circleCI config with modern testing steps
 5.1.2
   - Ensuring disabled items don't close on close
 5.0.1

circle.yml

@@ -1,13 +1,14 @@
 machine:
   node:
-    version: 0.10.21
+    version: 4.3.1
 
-test:
-    pre:
-        - gem install sass -v 3.4
-        - bower cache clean
-        - bower install
+dependencies:
     override:
-        - grunt lint
-        - grunt test 
+        - npm install
+        - npm install -g grunt-cli
 
+test:
+    override:
+        - grunt sasslint
+        - grunt lint:prod
+        - grunt test