README.textile in tlconnor-xero_gateway-1.0.1 vs README.textile in tlconnor-xero_gateway-1.0.2

@@ -50,11 +50,11 @@
 
 
 
 h3. PUT /api.xro/1.0/contact
 
-Saves a contact record for a particular Xero customer. If the contact record does not exist (based on either ContactID or ContactNumber) then it’s created, otherwise it’s updated.
+Saves a contact record for a particular Xero customer.
 <pre><code>
     contact = XeroGateway::Contact.new
 	contact.name = "The contacts name"
     contact.email = "[e-mail]"
     contact.phone.number = "555 123 4567"
@@ -67,11 +67,21 @@
 	
 	gateway.create_contact(contact)
 </code></pre>
 
 
+h3. POST /api.xro/1.0/contact
 
+Updates an existing contact record.
+<pre><code>
+    contact_retrieved_from_xero.email = "[e-mail]"
+	
+	gateway.update_contact(contact)
+</code></pre>
+
+
+
 h3. GET /api.xro/1.0/invoice (get_invoice_by_id)
 
 Gets an invoice record for a specific Xero organisation
 <pre><code>
 	gateway.get_invoice_by_id(invoice_id)
@@ -90,11 +100,12 @@
 
 h3. GET /api.xro/1.0/invoices (get_invoices)
 
 Gets all invoice records for a particular Xero customer.
 <pre><code>
-	gateway.get_invoices(modified_since = nil)
+	gateway.get_invoices
+	gateway.get_invoices(1.month.ago) # modified since 1 month ago
 </code></pre>
 
 
 
 h3. PUT /api.xro/1.0/invoice
@@ -126,12 +137,19 @@
 	
 	gateway.create_invoice(invoice)
 </code></pre>
 
 
-
 h3. GET /api.xro/1.0/accounts
 
 Gets all accounts for a specific organization in Xero.
 <pre><code>
 	gateway.get_accounts
+</code></pre>
+
+
+h3. GET /api.xro/1.0/tracking
+
+Gets all tracking categories and their options for a specific organization in Xero.
+<pre><code>
+	gateway.get_tracking_categories
 </code></pre>
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