1-join-leave: added

lib/release/leave.rb

@@ -0,0 +1,23 @@
+require_relative './base'
+
+module Release
+
+  class Leave < Release::Base
+    def valid?
+      argv.size == 1
+    end
+
+    def help
+      "release leave"
+    end
+
+    def execute
+      validate_current_branch_is_release
+
+      git_checkout "master"
+      
+      git_local_branch_trash current_branch
+    end
+  end
+
+end