Update trial configs (#918)

* update readme in ga_squad

* update readme

* fix typo

* Update README.md

* Update README.md

* Update README.md

* update readme

* update

* fix path

* update reference

* fix bug in config file

* update nni_arch_overview.png

* update

* update

* update

* update home page

* add metis as config choice

examples/trials/sklearn/classification/config_pai.yml

@@ -9,7 +9,7 @@ searchSpacePath: search_space.json
 #choice: true, false
 useAnnotation: false
 tuner:
-  #choice: TPE, Random, Anneal, Evolution, BatchTuner
+  #choice: TPE, Random, Anneal, Evolution, BatchTuner,MetisTuner
   #SMAC (SMAC should be installed through nnictl)
   builtinTunerName: TPE
   classArgs:

examples/trials/sklearn/regression/config.yml

@@ -9,7 +9,7 @@ searchSpacePath: search_space.json
 #choice: true, false
 useAnnotation: false
 tuner:
-  #choice: TPE, Random, Anneal, Evolution
+  #choice: TPE, Random, Anneal, Evolution, BatchTuner, MetisTuner
   builtinTunerName: TPE
   classArgs:
     #choice: maximize, minimize

examples/trials/sklearn/regression/config_pai.yml

@@ -9,7 +9,7 @@ searchSpacePath: search_space.json
 #choice: true, false
 useAnnotation: false
 tuner:
-  #choice: TPE, Random, Anneal, Evolution, BatchTuner
+  #choice: TPE, Random, Anneal, Evolution, BatchTuner, MetisTuner
   #SMAC (SMAC should be installed through nnictl)
   builtinTunerName: TPE
   classArgs: