update readme [skip ci]

README.md

@@ -5,4 +5,48 @@
 
 This fork is *mostly* a copy of the [iiif_s3 gem](https://github.com/cmoa/iiif_s3) with all the s3 dependencies and functionality removed. It creates level 0 IIIF derivatives for static exhibition sites with [Minicomp/Wax](https://github.com/minicomp/wax/) via [Wax_Tasks](https://github.com/minicomp/wax_tasks/).
 
+## Installation
+
+This library assumes that you have ImageMagick installed. If you need to install it, follow the instructions:
+
+on OSX, `brew install imagemagick ` should be sufficient.
+
+If you have issues with TIFF files, try
+
+```shell
+
+brew update
+brew reinstall --with-libtiff --ignore-dependencies imagemagick
+
+```
+
+If you plan to work with PDFs, you should also have a copy of GhostScript installed.
+
+on OSX, `brew install gs`
+
+
+
+Add this line to your application's Gemfile:
+
+    gem 'wax_iiif'
+
+And then execute:
+
+    $ bundle
+
+Or install it yourself as:
+
+    $ gem install wax_iiif
+
+## Usage
+
 Documentation for using `wax_iiif` without `wax_tasks` is forthcoming. In the meantime, check out [rubydoc](https://www.rubydoc.info/gems/wax_iiif).
+
+
+## Contributing
+
+1. Fork it ( https://github.com/minicomp/wax_iiif/fork )
+2. Create your feature branch (`git checkout -b my-new-feature`)
+3. Commit your changes (`git commit -am 'Add some feature'`)
+4. Push to the branch (`git push origin my-new-feature`)
+5. Create a new Pull Request