cleanup (#2)

* yargs
* readme, example and logging
* clear cache
* package info

.eslintignore

@@ -1,3 +1,4 @@
 .vscode
 .cache
+coverage
 lib

.github/workflows/tests.yml

@@ -10,7 +10,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        node-version: [10.x, 12.x, 14.x]
+        node-version: [12.x, 14.x, 15.x]
 
     steps:
       - uses: actions/checkout@v2

README.md

@@ -1 +1,37 @@
 # dawn-till-dusk 🧛
+
+A simple tool to display the sunrise, sunset and day length based on your location from the comfort of the command line.
+
+### Example output
+
+![example output](./example.jpg)
+
+### Installation
+
+```
+npm i -g @mrgeorgegray/dawn-till-dusk
+```
+
+### Usage
+
+```
+Usage: dtd <command> [options]
+
+Commands:
+  index.js dtd  Display sunrise & sunset times
+
+Options:
+  --help, -h     Show help                            [boolean] [default: false]
+  --version, -v  Show version number                                   [boolean]
+  --clean, -c    Clear data cache                     [boolean] [default: false]
+  --date, -d     Search by date                      [string] [default: "today"]
+  --logging, -l  Output extra logging info            [boolean] [default: false]
+
+Examples:
+  dtd -d '2021-08-12'  display sunrise & sunset times for a given day
+```
+
+### Credits
+
+- IP Address data from [https://ip-api.com](ip-api.com)
+- Sunrise data from [https://sunrise-sunset.org/api](sunrise-sunset.org/api)