Get latest release from git tags

zsh-nvm.plugin.zsh

@@ -21,9 +21,7 @@ _zsh_nvm_get() {
 }
 
 _zsh_nvm_latest_release_tag() {
-  _zsh_nvm_get "https://api.github.com/repos/creationix/nvm/releases/latest" |  # Get latest release from GitHub api
+  echo $(cd "$NVM_DIR" && git fetch --quiet origin && git describe --abbrev=0 --tags --match "v[0-9]*" origin)
-    grep '"tag_name":' |                                                        # Get tag line
-    sed -E 's/.*"([^"]+)".*/\1/'                                                # Pluck JSON value
 }
 
 _zsh_nvm_install() {