Added a segment that shows the current GO version number.

README.md

@@ -235,6 +235,7 @@ currently available are:
 * **context** - Your username and host (more info below)
 * **vi_mode** - Vi editing mode (NORMAL|INSERT).
 * **dir** - Your current working directory.
+* **go_version** - Show the current GO version.
 * **history** - The command number for the current line.
 * **ip** - Shows the current IP address.
 * **load** - Your machines 5 minute load average and free RAM.

powerlevel9k.zsh-theme

@@ -608,6 +608,16 @@ prompt_dir() {
   "$1_prompt_segment" "$0" "blue" "$DEFAULT_COLOR" "$(print_icon 'HOME_ICON')$current_path"
 }
 
+# GO-prompt
+prompt_go_version() {
+  local go_version
+  go_version=$(go version 2>&1 | grep -oe "^go[0-9.]*")
+
+  if [[ -n "$go_version" ]]; then
+    "$1_prompt_segment" "$0" "green" "255" "$go_version"
+  fi
+}
+
 # Command number (in local history)
 prompt_history() {
   "$1_prompt_segment" "$0" "244" "$DEFAULT_COLOR" '%h'