安装教程conda create新增默认的/envs下面，而不只是只能要额外指定路径 用-p (#482)

* Update 安装教程中conda虚拟环境的创建与激活

README_en.md

@@ -87,6 +87,10 @@ $ conda create -p /your_path/env_name python=3.8
 # Activate the environment
 $ source activate /your_path/env_name
 
+# or, do not specify an env path, note that /your_path/env_name is to be replaced with env_name below
+$ conda create -n env_name python=3.8
+$ conda activate env_name # Activate the environment
+
 # Deactivate the environment
 $ source deactivate /your_path/env_name
 

docs/INSTALL.md

@@ -12,6 +12,12 @@ $ conda create -p /your_path/env_name python=3.8
 
 # 激活环境
 $ source activate /your_path/env_name
+
+# 或，conda安装，不指定路径, 注意以下，都将/your_path/env_name替换为env_name
+$ conda create -n env_name python=3.8
+$ conda activate env_name # Activate the environment
+
+# 更新py库
 $ pip3 install --upgrade pip
 
 # 关闭环境