update (#320)

* update

* fix ga_squad config

README.md

@@ -25,7 +25,7 @@ The tool dispatches and runs trial jobs generated by tuning algorithms to search
 **Install through pip** 	
 * We only support Linux in current stage, Ubuntu 16.04 or higher are tested and supported. Simply run the following `pip install` in an environment that has `python >= 3.5`.	
 ```bash	
-    python3 -m pip install --user nni
+    python3 -m pip install --user --upgrade nni
 ```
 
 **Install through source code**

examples/trials/ga_squad/config.yml

@@ -8,7 +8,7 @@ trainingServicePlatform: local
 #choice: true, false
 useAnnotation: false
 tuner:
-  codeDir: ../tuners/ga_customer_tuner
+  codeDir: ../../tuners/ga_customer_tuner
   classFileName: customer_tuner.py
   className: CustomerTuner
   classArgs: