docs(nodejs): update Node.js spelling in logs

lib/nodejs

@@ -6,7 +6,7 @@ function install_node_deps() {
       return 0
   fi
 
-  status "NODE (package.json) app detected"
+  status "Node.js app detected (package.json)"
 
   compile_node $BUILD_DIR $CACHE_DIR
 
@@ -17,7 +17,7 @@ function install_node_deps() {
   ln -s ${BUILD_DIR}/${node_path}/ /app/${node_path}
   ln -s ${BUILD_DIR}/node_modules /app/node_modules
 
-  echo "Node " `node -v` | indent
+  echo "Node.js " $(node --version) | indent
 }
 
 function compile_node() {
@@ -53,12 +53,12 @@ function compile_node() {
   if [ "$semver_range" == "" ]; then
     status "Defaulting to latest stable node: $node_version"
   else
-    status "Requested node range:  $semver_range"
-    status "Resolved node version: $node_version"
+    status "Requested Node.js versions range: $semver_range"
+    status "Resolved Node.js version: $node_version"
   fi
 
   # Download node from Heroku's S3 mirror of nodejs.org/dist
-  status "Downloading and installing node"
+  status "Downloading and installing Node.js"
   node_url="https://heroku-nodebin.s3.us-east-1.amazonaws.com/node/release/linux-x64/node-v${node_version}-linux-x64.tar.gz"
   curl $node_url --location -s -o - | tar xzf - -C $build_dir
 
@@ -90,10 +90,10 @@ function compile_node() {
     test -d $cache_dir/node_modules && cp -r $cache_dir/node_modules $build_dir/
   fi
 
-  status "Installing dependencies"
+  status "Installing Node.js dependencies"
   npm install --production 2>&1 | indent
 
-  status "Pruning unused dependencies"
+  status "Pruning unused Node.js dependencies"
   npm prune 2>&1 | indent
 
   status "Caching node_modules for future builds"