update usage, add contributing and resources sections

README.md

@@ -1,6 +1,6 @@
 # himawari-bg
 
-> Set the latest image from Himawari 8 as your desktop background
+> Set the latest image from Himawari 8 as your desktop background.
 
 [![npm][npm-image]][npm-url]
 [![travis][travis-image]][travis-url]
@@ -35,7 +35,9 @@ npm install --global himawari-bg
 
 Note: This is alpha quality! Tested only on OSX.
 
-## Command Line Usage
+## Usage
+
+### Command Line
 
 You can run `himawari-bg` on the command line after it's been installed globally with `npm`.
 
@@ -47,14 +49,17 @@ There are some options available if you'd like to go further:
 
 ```
 Usage: himawari-bg [options]
-    --outfile, -o         The location to save the resulting image. (default: `~/Pictures/himawari-images/${Date.now()}.jpg`)
+
+    --outfile, -o         Location to save image. (default: `~/Pictures/himawari-images/${Date.now()}.jpg`)
     --zoom, -z            The zoom level of the image. Can be 1-5. (default: 2)
-    --date, -d            The time of the picture desired. If you want to get the latest image, use "latest". (default: "latest")
+    --date, -d            Time of the picture desired. Can also be "latest". (default: "latest")
     --infrared, -i        Capture picture on the infrared spectrum. (default: false)
+    --parallel, -p        Parallelize downloads for increased speeds (can be CPU intensive). (default: true)
+    --version, -v         Show version information.
     --help, -h            Show help.
 ```
 
-## Programmatic Usage
+### Node.js
 
 `himawari-bg` can also be used as a node module by installing it normally:
 
@@ -100,14 +105,39 @@ bg({
 })
 ```
 
-### Acknowledgements
+## Acknowledgements
 
 Thanks to [celoyd](https://github.com/celoyd) for the inspiring [`glittering.blue`](https://glittering.blue/) and [jakiestfu](https://github.com/jakiestfu) for creating [`himawari.js`](https://github.com/jakiestfu/himawari.js).
 
-### Addendum
+## Addendum
 
 It turns out `himawari.js` was inspired by [this gist](https://gist.github.com/MichaelPote/92fa6e65eacf26219022) by [MichaelPote](https://github.com/MichaelPote) which basically does the exact same thing as `himawari-bg` except in a Windows Powershell environment. So I unwittingly made something inspired by something that was inspired by something that does what I did. Internet! `¯\_(ツ)_/¯`
 
+## Additional Resources
+
+Here are some useful links if you're interested in learning more about the Himawari 8 satellite.
+
+### Official
+
+- [Himawari 8 Real-time Web](http://himawari8.nict.go.jp)
+- [Himawari Data Guide](http://www.eorc.jaxa.jp/ptree/userguide.html)
+- [Himawari 8/9 Standard Data User's Guide](http://www.data.jma.go.jp/mscweb/en/himawari89/space_segment/hsd_sample/HS_D_users_guide_en_v12.pdf)
+- [JAXA account registration (for access to more data)](http://www.eorc.jaxa.jp/ptree/registration_top.html)
+
+### Related Projects
+
+- by @[celoyd](https://github.com/celoyd):
+  - [Glittering Blue](http://glittering.blue)
+  - [Himawari 8 animation tutorial](https://gist.github.com/celoyd/b92d0de6fae1f18791ef)
+  - [deband python script](https://gist.github.com/celoyd/a4dd9202fe5c7978b114)
+  - [makeaday bash script](https://gist.github.com/celoyd/c2293929ab3fe97ea597)
+- [himawari.js](https://github.com/jakiestfu/himawari.js) by @[jakiestfu](https://github.com/jakiestfu)
+- [himawari-urls](https://github.com/ngoldman/himawari-urls) by @[ngoldman](https://github.com/ngoldman)
+
+## Contributing
+
+Contributions welcome! Please read the [contributing guidelines](contributing.md) before getting started.
+
 ## License
 
 [ISC](LICENSE.md)