feat: Show hidden point locations both 2d and 3d with tests

Add travis support
Bump version number

Author: robertleeplummerjr

.travis.yml

@@ -0,0 +1,13 @@
+language: node_js
+node_js:
+- '6'
+- '8'
+- '10'
+cache:
+  directories:
+  - node_modules
+install:
+- npm install
+script:
+- npm run test
+sudo: false