add fluentd

WriteToMongo/fluent/install-fluent.sh

@@ -8,11 +8,11 @@ echo $BASEDIR
 cd $BASEDIR
 
 sudo -u node gem install fluentd --no-doc
-sudo -u node gem install gem install fluent-plugin-mongo
+sudo -u node gem install  fluent-plugin-mongo
-sudo -u node gem install gem install oj
+sudo -u node gem install  oj
-sudo -u node gem install gem install json
+sudo -u node gem install  json
-sudo -u node gem install gem install async-http
+sudo -u node gem install  async-http
-sudo -u node gem install gem install ext_monitor
+sudo -u node gem install  ext_monitor
 sudo -u node gem install gem sources --clear-all 
 
 cp fluent.conf /fluentd/etc/