README.md in pivotal_to_pdf-1.1.0 vs README.md in pivotal_to_pdf-1.2.0

@@ -14,13 +14,18 @@
 ## USAGE
 First you need to create a .pivotal.yml under your home directory. On windows, have this file in %HOME%.pivotal.yml
 
 a sample .pivotal.yml:
 
-    token: your-api-token-of-pivotal-tracker
-    project_id: your-ptroject-id
+```yaml
+token: your-api-token-of-pivotal-tracker
+project_id: your-ptroject-id
+formatter: PivotalToPdf::DefaultFormatter
+```
 
+The meaning of the ```formatter``` key will be explained in the next section
+
 After install the gem, you can do:
 
 * pivotal_to_pdf current_iteration       # print stories for the current iteration into a PDF file
 
 * pivotal_to_pdf story STORY_ID  # print a single story specifed by ID into a PDF file
@@ -58,12 +63,31 @@
 
 Printed a green bounding box for feature, a yellow box for chores and a red box for bugs
 
 The gem assumes that you have https access to the pivotal tracker
 
+## Formatters
+
+From the version 1.2, The gem supports alternative formatter other than the default one.
+In the ```.pivotal.yml``` file, if you define a key like
+
+```yaml
+
+formatter: PivotalToPdf::MyPrettyHtmlWriter
+```
+
+The gem will use ```PivotalToPdf::MyPrettyHtmlWriter``` to generate the output.
+
+The class implementation should have the same interface as the ```DefaultFormatter```
+
+- The ```initialize``` should take an array of stories
+- The ```write_to``` method write the output
+
+This feature is associated to the [issue #14](pivotal_to_pdf/issues/14). I basically rewrite the code to implement this myself.
+
 ##Contributors
 * [Yi Wen](https://github.com/ywen)
 * Carol Nichols
 * Kristian Rasmussen 
 * [Alastair Mair](https://github.com/amair)
 * [John-Mason P. Shackelford](https://github.com/jpshackelford)
-* [mogul](https://github.com/mogul)
+* [Bret Mogilefsky](https://github.com/mogul)