Update README.md

Fixed a typo

README.md

@@ -19,7 +19,7 @@ To test the shell and see if it suits you.
 If everything works, then move the binary to a place inside your path.  
 
 To directly install it with the Go toolchain, just use  
-`go intall`  
+`go install`  
 This will build and place the binary inside your `$HOME/go/bin` folder.  
 Add this folder to your path and you are good to go !  
 
@@ -29,7 +29,15 @@ To use the program, just invoke it with `GoSH`
 To change config parameter on the fly, use the `set` builtin.  
 Currently, `set` has a limited amount of configuration options and need to have a valid config file to write to.  
 To change the color of the prompt use `set color <color>`  
-All the avalable colors : black red purple cyan white green yellow blue  
+All the avalable colors :
+  - black
+  - red
+  - purple
+  - cyan
+  - white
+  - green
+  - yellow
+  - blue  
 You can change the history size with `set history_size <int>`  
 You can change the prompt with `set prompt <promp>`  
 Here is some exemple of prompts :