version bump

README.md

@@ -1,7 +1,7 @@
 # slideslurp
 
 Give slideslurp a URL to a [SlideShare](https://www.slideshare.net/)
-presentation and it will give you a PDF called `out.pdf`.
+presentation and it will render it as a PDF.
 
 I will clean this up, I promise.
 
@@ -11,5 +11,21 @@ I will clean this up, I promise.
 pip install slideslurp
 ```
 
+## Usage
+
+```
+usage: slideslurp [-h] [--output OUTPUT] url
+
+Generate PDFs from Slideshare presentations
+
+positional arguments:
+  url                   the URL to slurp
+
+optional arguments:
+  -h, --help            show this help message and exit
+  --output OUTPUT, -o OUTPUT
+                        the file to write to (default: out.pdf)
+```
+
 <hr/>
 Happy slurping!