Add `nvmrc` note to `nvm which` blurb.

README.markdown

@@ -43,7 +43,7 @@ Often I also put in a line to use a specific version of node.
 ## Usage
 
 You can create an `.nvmrc` file containing version number in the project root directory (or any parent directory).
-`nvm use`, `nvm install`, `nvm exec`, and `nvm run` will all respect an `.nvmrc` file.
+`nvm use`, `nvm install`, `nvm exec`, `nvm run`, and `nvm which` will all respect an `.nvmrc` file when a version is not supplied.
 
 To download, compile, and install the latest v0.10.x release of node, do this:
 

nvm.sh

@@ -547,7 +547,7 @@ nvm() {
       echo "  nvm unalias <name>                    Deletes the alias named <name>"
       echo "  nvm reinstall-packages <version>      Reinstall global \`npm\` packages contained in <version> to current version"
       echo "  nvm unload                            Unload \`nvm\` from shell"
-      echo "  nvm which [<version>]                 Display path to installed node version"
+      echo "  nvm which [<version>]                 Display path to installed node version. Uses .nvmrc if available"
       echo
       echo "Example:"
       echo "  nvm install v0.10.32                  Install a specific version number"