Adding an `nvm --version` command

README.markdown

@@ -6,13 +6,13 @@ First you'll need to make sure your system has a c++ compiler.  For OSX, XCode w
 
 ### Install script
 
-To install you could use the [install script](https://github.com/creationix/nvm/blob/master/install.sh) (requires Git) using cURL:
+To install you could use the [install script](https://github.com/creationix/nvm/blob/v0.3.0/install.sh) (requires Git) using cURL:
 
-    curl https://raw.github.com/creationix/nvm/master/install.sh | sh
+    curl https://raw.github.com/creationix/nvm/v0.3.0/install.sh | sh
 
 or Wget:
 
-    wget -qO- https://raw.github.com/creationix/nvm/master/install.sh | sh
+    wget -qO- https://raw.github.com/creationix/nvm/v0.3.0/install.sh | sh
 
 <sub>The script clones the nvm repository to `~/.nvm` and adds the source line to your profile (`~/.bash_profile` or `~/.profile`).</sub>
 

nvm.sh

@@ -188,6 +188,7 @@ nvm() {
       echo
       echo "Usage:"
       echo "    nvm help                    Show this message"
+      echo "    nvm --version               Print out the latest released version of nvm"
       echo "    nvm install [-s] <version>  Download and install a <version>, [-s] from source"
       echo "    nvm uninstall <version>     Uninstall a version"
       echo "    nvm use <version>           Modify PATH to use <version>"
@@ -541,6 +542,9 @@ nvm() {
     "version" )
         nvm_version $2
     ;;
+    "--version" )
+        echo "nvm v0.3.0"
+    ;;
     * )
       nvm help
     ;;