Update github actions config

Author: Flowm

.github/workflows/nodejs.yml

@@ -4,17 +4,16 @@ on: [push]
 
 jobs:
   build:
-
     runs-on: ubuntu-latest
-
     strategy:
       matrix:
-        node-version: [10.x, 12.x]
-
+        node_version:
+          - 12
+          - 14
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: Setup node
-      uses: actions/setup-node@v1
+      uses: actions/setup-node@v2
       with:
         node-version: ${{ matrix.node-version }}
     - name: npm install

README.md

@@ -1,4 +1,4 @@
-# [satvis.space](https://satvis.space)
+# [satvis.space](https://satvis.space) ![Node CI](https://github.com/Flowm/satvis/workflows/Node%20CI/badge.svg)
 
 Satellite orbit visualization and pass prediction.