Added documentation for the new commands to the readme file.

ChangeLog.markdown

@@ -1,3 +1,8 @@
+# 0.9.8
+ * Introduce new commands
+     * `homesick cd`
+     * `homesick open`
+
 # 0.9.4
  * Use https protocol instead of git protocol
  * Introduce new commands

README.markdown

@@ -48,6 +48,14 @@ To push your castle:
 
     homesick push CASTLE
 
+To open a terminal in the root of a castle:
+
+    homesick cd CASTLE
+
+To open your default editor in the root of a castle (the $EDITOR environment variable must be set):
+
+    homesick open CASTLE
+
 Not sure what else homesick has up its sleeve? There's always the built in help:
 
     homesick help