fix dirname

lib/certMgr.js

@@ -7,7 +7,7 @@ var exec = require('child_process').exec,
     asyncTask    = require("./asyncTaskMgr");
 
 var certDir      = path.join(getUserHome(),"/.anyproxy_certs/"),
-    cmdDir       = "./cert/",
+    cmdDir       = path.join(__dirname,"..","./cert/"),
     asyncTaskMgr = new asyncTask();
 
 if(!fs.existsSync(certDir)){
@@ -61,6 +61,7 @@ function clearCerts(cb){
 }
 
 function checkRootCA(){
+
     var crtFile = path.join(cmdDir,"rootCA.crt"),
         keyFile = path.join(cmdDir,"rootCA.key");