Added class and os alternates

.oh-my-zsh/lib/nvm.zsh

@@ -0,0 +1,9 @@
+# get the node.js version
+function nvm_prompt_info() {
+  [[ -f "$NVM_DIR/nvm.sh" ]] || return
+  local nvm_prompt
+  nvm_prompt=$(node -v 2>/dev/null)
+  [[ "${nvm_prompt}x" == "x" ]] && return
+  nvm_prompt=${nvm_prompt:1}
+  echo "${ZSH_THEME_NVM_PROMPT_PREFIX}${nvm_prompt}${ZSH_THEME_NVM_PROMPT_SUFFIX}"
+}