Update README.md (#410)

* Update README.md

add `""` to pip install to avoid `zsh: no matches found`

* Update gs_installation.md

update Doc

README.md

@@ -34,15 +34,15 @@ Although the installation includes PyTorch, the best and recommended way is to f
 Once, you have got Pytorch installed, just use:
 
 ```bash
-pip install -U pytorch_tabular[extra]
+pip install -U “pytorch_tabular[extra]”
 ```
 
 to install the complete library with extra dependencies (Weights&Biases & Plotly).
 
 And :
 
 ```bash
-pip install -U pytorch_tabular
+pip install -U “pytorch_tabular”
 ```
 
 for the bare essentials.

docs/gs_installation.md

@@ -5,7 +5,7 @@
 Once, you have got PyTorch installed and working, just use:
 
 ```bash
- pip install pytorch_tabular[extra]
+ pip install "pytorch_tabular[extra]"
 ```
 
 to install the complete library with extra dependencies:
@@ -17,7 +17,7 @@ to install the complete library with extra dependencies:
 And :
 
 ``` bash
- pip install pytorch_tabular
+ pip install "pytorch_tabular"
 ```
 
 for the bare essentials.