README.md in nutrella-1.5.4 vs README.md in nutrella-1.6.0

@@ -1,10 +1,9 @@
 # Nutrella
 
 [![Gem Version](http://img.shields.io/gem/v/nutrella.svg?style=flat)](https://rubygems.org/gems/nutrella)
 [![Code Climate](https://codeclimate.com/github/amckinnell/nutrella/badges/gpa.svg)](https://codeclimate.com/github/amckinnell/nutrella)
-[![Build Status](https://travis-ci.org/amckinnell/nutrella.svg?branch=master)](https://travis-ci.org/amckinnell/nutrella)
 
 A command line tool for associating a Trello board with the current git branch.
 
 ## Table of Contents
 
@@ -43,11 +42,11 @@
 
 **Step 5**: Update configuration file
 
 If your haven't already done so, insert your `key`, `secret`, and `token` into your `~/.nutrella.yml` file.
 
-The configuration file should look like the following (don't use the keys below, they won't work):
+The configuration file should look like the following (don't use the keys below as they won't work for you):
 
 ```yaml
     # Trello Developer API Keys
     key: c2fc703429da08b6e7dcb0a878e35564
     secret: 7fd865f372891afa93aabdb6b836254bcda10c8a320def2b3207e2ffb425bc0a
@@ -57,10 +56,11 @@
     organization: 542d76ac2fad4697c3e80448
     launch_command: open $url$
     enable_trello_app: false
     enable_logging: true
     cache_capacity: 5
+    cache_first: '^PM-\d+'
 ```
 
 **Step 6**: Adjust configuration file (Optional)
 
 Adjust the `launch_command` configuration to fit your needs.
@@ -87,25 +87,46 @@
 
 ```yaml
    cache_capacity: 15
 ```
 
+Adjust the `cache_first` configuration to allow searching the cache first before creating or opening a Trello board:
 
+```yaml
+   cache_first: '^(PM|QC)-\d+'
+```
+
+The string that you specify will be treated as a regular expression.
+
+
+
 ## Usage
 
-Create or open a Trello board based on the name of the current git branch:
+There are three ways to invoke the nutrella command:
 
-```sh
+1. Create or open a Trello board based on the name of the current git branch:
+
+    ```sh
     $ nutrella
-```
+    ```
+   
+    This is the command invocation that should meet your needs 90% of the time.
 
-Create or open a named Trello board:
 
-```sh
+1. Create or open a named Trello board using the full git branch name:
+
+    ```sh
     $ nutrella <git-branch-name>
-```
+    ```
 
-Note: you can invoke `nutrella` from your project directory or from any subdirectory.
+
+2. Create or open a previously created Trello board using a JIRA ticket like `PM-9423`:
+
+    ```sh
+    $ nutrella <JIRA Ticket>
+    ```
+
+    This behaviour relies on the `cache_first` configuration setting. Invoking `nutrella` with a JIRA ticket number is for those situations where you make multiple git branches for the same JIRA ticket with a different suffix.
 
 
 ## Troubleshooting
 
 1. If an unexpected Trello board is opening try clearing your cache: