Adds: CI tests & badges (#2)

add CI tests

.github/workflows/check-release.yml

@@ -0,0 +1,11 @@
+on: [push, pull_request]
+name: Check & Release
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@master
+      - name: lint
+        uses: Roang-zero1/factorio-mod-luacheck@master
+        with:
+          luacheckrc_url: https://raw.githubusercontent.com/shivajiva101/weather/master/.luacheckrc

.luacheckrc

@@ -0,0 +1,9 @@
+unused_args = false
+allow_defined_top = true
+
+read_globals = {
+	"minetest",
+	string = {fields = {"split"}},
+	table = {fields = {"copy", "getn"}},
+	"vector", "default",
+}

README.md

@@ -1,4 +1,7 @@
 # Weather
+[![Build status](https://github.com/shivajiva101/sban/workflows/Check%20&%20Release/badge.svg)](https://github.com/shivajiva101/weather/actions)
+[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
+
 This mod provides diverse weather for mapgen v5, v7 and a somewhat simpler weather for v6.
 
 The reason v6 maps are handled differently is due to the inability to detect the current biome of a players position, v6 maps report 'default' for every biome.  
@@ -41,4 +44,4 @@ Works with MT/MTG 5.0.0+.
 
 ## Issues, features, suggestions & bugfixes
 Report bugs or suggest ideas by [creating an issue](https://github.com/shivajiva101/weather/issues/new).   
-If you know how to fix an issue, or want something to be added, consider opening a [pull request](https://github.com/shivajiva101/weather/compare).
+If you know how to fix an issue, or want something to be added, consider opening a [pull request](https://github.com/shivajiva101/weather/compare).