Add options documentation

Author: marcbachmann

README.md

@@ -26,12 +26,44 @@ pdf.create(htmlString, options, callback)
 ```
 
 ## Options
-`script`: Absolute path to a custom phantomjs script, use the file in lib/scripts as example  
-`timeout`: Timeout that will cancel phantomjs, milliseconds as Integer, default: 10000  
-`filename`: The file path of the file that will be written. If you want to save the file permanently, you have to pass this option.  
-`directory`: The directory path of the file that will be written. default: '/tmp'  
+```javascript
+config = {
+  // Script options
+  script: '/url'             // Absolute path to a custom phantomjs script, use the file in lib/scripts as example
+  timeout: 10000           // Timeout that will cancel phantomjs, in milliseconds
 
-The full options object gets converted to JSON and will get passed to the phantomjs script as third argument.  
-There are more options concerning the paperSize, header & footer options inside the phantomjs script.  
+  // Papersize Options: http://phantomjs.org/api/webpage/property/paper-size.html
+  "height": "",              // allowed units: mm, cm, in, px
+  "width": "",               // allowed units: mm, cm, in, px
+  - or -
+  "format": "A4",            // allowed units: A3, A4, A5, Legal, Letter, Tabloid
+  "orientation": "portrait", // portrait or landscape
+
+
+  // Page options
+  "border": "0"              // default is 0, units: mm, cm, in, px
+  "header": {
+    "height": "45mm",
+    "contents": "<div style="text-align: center;">© Marc Bachmann</div>"
+  },
+  "footer": {
+    "height": "28mm",
+    "contents": "<span style="color: #444;">{{page}}</span>/<span>{{pages}}</span>"
+  },
+  
+
+  // File options
+  "type": "pdf",             // allowed file types: png, jpeg, pdf
+  "quality": "75",           // only used for types png & jpeg
 
-## documentations for more available options will follow soon :)  
+
+  // Export options
+  "buffer": true,            // only supported on certain systems
+  - or -
+  "filename": "/tmp/html-pdf-123-123.pdf" // The file path of the file that will be written. If you want to save the file permanently, you have to pass this option.
+  "directory": "/tmp"        // The directory the file gets written into if no filename is defined. default: '/tmp' 
+}
+```
+
+The full options object gets converted to JSON and will get passed to the phantomjs script as third argument.  
+There are more options concerning the paperSize, header & footer options inside the phantomjs script.