update for 2.0.1 release

Author: luckyj5

Makefile

@@ -1,5 +1,5 @@
 PLUGIN_NAME=splunk/docker-logging-plugin
-PLUGIN_TAG=latest
+PLUGIN_TAG=2.0.1
 PLUGIN_DIR=./splunk-logging-plugin
 
 all: clean docker rootfs create

README.md

@@ -39,7 +39,7 @@ There are multiple ways to install Splunk Connect for Docker, Splunk recommends
 
 1. Pull the plugin from docker hub
 ```
-$ docker plugin install splunk/docker-logging-plugin:latest --alias splunk-logging-plugin
+$ docker plugin install splunk/docker-logging-plugin:2.0.1 --alias splunk-logging-plugin
 ```
 2. Enable the plugin if needed:
 ```
@@ -50,6 +50,7 @@ $ docker plugin enable splunk-logging-plugin
 1. Clone the repository and check out release branch
 ```
 $ git clone  https://github.com/splunk/docker-logging-plugin.git
+$ git checkout release/2.0.1
 ```
 2. Create the plugin package
 ```