added failing feature for editing handle; added edit button on profile

features/edit_profile.feature

@@ -0,0 +1,16 @@
+Feature: Edit Profile
+  In order to keep their information up-to-date
+  A user
+  Should be able to edit their profile
+
+  @wip
+  Scenario: Edit Handle
+    Given I have signed in with "john@example.com/password"
+    And my handle is "johndoe"
+    And I am on my profile page
+
+    When I follow "Edit"
+    And I fill in "Handle" with "john"
+    And I press "Update"
+
+    Then I should see my new "Handle"

features/step_definitions/clearance_steps.rb

@@ -24,6 +24,10 @@
     :password_confirmation => password)
 end
 
+Given /^my handle is "([^\"]*)"$/ do |handle|
+  @me.update_attributes!(:handle => handle)
+end
+
 # Session
 
 Then /^I should be signed in$/ do