Update Readme

Author: Ovidiu-Florin BOGDAN

README.md

@@ -195,7 +195,7 @@ NOTE: You do not need to specify *end* segment - it will be added automatically.
 |`BULLETTRAIN_KCTX_PREFIX`|`⎈`|[Kubernetes](https://unicode-table.com/de/2388/) prefix of the segment
 |`BULLETTRAIN_KCTX_KCONFIG`|`<MUST_BE_SET>`|Location of kube config file (e.g. /Users/Hugo/.kube/config)
 
-`BULLETTRAIN_KCTX_KCONFIG` must be set, e.g. in .zshrc. There can be no default value and `~/` can not be reliably interpreted. The prompt will also do a sanity check whether `kubectl` is installed. If either condition fails, the prompt segment will not be drawn at all. 
+`BULLETTRAIN_KCTX_KCONFIG` must be set, e.g. in .zshrc. There can be no default value and `~/` can not be reliably interpreted. The prompt will also do a sanity check whether `kubectl` is installed. If either condition fails, the prompt segment will not be drawn at all.
 
 ### AWS Profile
 
@@ -252,6 +252,14 @@ This environment var is used by aws-cli and other tools to use the right access
 
 The git prompt can be disabled for a specific repository by setting a git config flag: `git config oh-my-zsh.hide-status 1`. This is useful to avoid performance issues for particularly huge repositories.
 
+### Terraform
+
+|Variable|Default|Meaning
+|--------|-------|-------|
+|`BULLETTRAIN_TERRAFORM_BG`|`magenta`|Background color
+|`BULLETTRAIN_TERRAFORM_FG`|`white`|Foreground color
+|`BULLETTRAIN_TERRAFORM_PREFIX`|`"♦"`|Prefix
+
 ### Screen
 
 |Variable|Default|Meaning