Add readme

README.md

@@ -1,14 +1,24 @@
-# JBZoo TeamcityKeyKeeper [![Build Status](https://travis-ci.org/JBZoo/Teamcity-KeyKeeper.svg?branch=master)](https://travis-ci.org/JBZoo/Teamcity-KeyKeeper)
+# JBZoo Teamcity Key Keeper [![Build Status](https://travis-ci.org/JBZoo/Teamcity-KeyKeeper.svg?branch=master)](https://travis-ci.org/JBZoo/Teamcity-KeyKeeper)
 
+Save some string data between Teamcity builds and restore them as environment variables.
 
+Save
 ```sh
-teamcity-keykeeper key:save    --name="some_env_var_name" --value="some_value";
-teamcity-keykeeper key:restore --all;
+teamcity-keykeeper key:save    --name="some_env_var_name"  --value="some_value";
+teamcity-keykeeper key:save    --name="some_env_var_name2" --value="some_value2";
 ```
 
-Output
+Restore
 ```sh
+teamcity-keykeeper key:restore --all;
 ##teamcity[setParameter name='env.SOME_ENV_VAR_NAME' value='some_value']
+##teamcity[setParameter name='env.SOME_ENV_VAR_NAME2' value='some_value2']
+```
+
+Get clean
+```sh
+teamcity-keykeeper key:get --name="some_env_var_name";
+some_value
 ```