clj-ssh should work when known_hosts file is absent.

.travis.yml

@@ -1,5 +1,5 @@
 language: clojure
-lein: lein2
+lein: lein
 before_script:
 - ssh-keygen -N "" -f ~/.ssh/id_rsa
 - cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
@@ -11,9 +11,9 @@ before_script:
 - echo "clj-ssh" > pp
 - chmod +x pp
 - setsid ssh-add ~/.ssh/clj_ssh_pp < pp
-script: lein2 test
+script: lein test
 after_success:
-- lein2 pallet-release push
+- lein pallet-release push
 env:
   global:
     secure: eOBqYhJhOJMtRiMKs9ZgG4pEHFy7YqiBZ5NUEWUYD6qav6sMRHqqR5F04NRI37SmnIupzeTChqfRgX0DOwHeTl4u+QJnwRDH2z3avu75FbtZWgiGrxzE39SESpVj/zsyDrEUzT7ZiMayXKyNa3ObiJ8vBUFT7x/OZyRp/1rJxHU=

README.md

@@ -92,6 +92,20 @@ system, then a local, isolated ssh-agent can be used.
       (let [result (ssh session {:in "echo hello"})]
         (println (result :out)))))
 ```
+If the known_hosts file is not in the default location, and you don't need to read it anyways,
+because you turned off strict-host-key-checking, you can advise ssh-agent to not attempt to 
+read the known_hosts file 
+
+```clj
+(let [agent (ssh-agent {:use-system-ssh-agent false
+                        :known-hosts-path :no-default-path})]
+  (add-identity agent {:private-key-path "/user/name/.ssh/id_rsa"})
+  (let [session (session agent "host-ip" {:strict-host-key-checking :no})]
+    (with-connection session
+      (let [result (ssh session {:in "echo hello"})]
+        (println (result :out)))))
+```
+
 
 SFTP is supported:
 

src/clj_ssh/ssh.clj

@@ -139,14 +139,14 @@
 
 (defn ssh-agent
   "Create a ssh-agent. By default a system ssh-agent is preferred."
-  [{:keys [use-system-ssh-agent ^String known-hosts-path]
+  [{:keys [use-system-ssh-agent known-hosts-path]
     :or {use-system-ssh-agent true
          known-hosts-path (str (. System getProperty "user.home")
                                "/.ssh/known_hosts")}}]
   (let [agent (JSch.)]
     (when use-system-ssh-agent
       (agent/connect agent))
-    (when known-hosts-path
+    (when-not (= :no-default-path known-hosts-path)
       (locking hosts-file
         (.setKnownHosts agent known-hosts-path)))
     agent))