#1160 Property to select node path.

README.md

@@ -75,6 +75,7 @@ to see how it should be set up: https://github.com/eirslett/frontend-maven-plugi
     - [Ignoring Failure](#ignoring-failure)
     - [Skipping Execution](#skipping-execution)
 
+
 **Recommendation:** _Try to run all your tasks via npm scripts instead of running bower, grunt, gulp etc. directly._
 
 ### Installing node and npm
@@ -83,6 +84,7 @@ The versions of Node and npm are downloaded from https://nodejs.org/dist, extrac
 in your [installation directory](#installation-directory) . Node/npm will only be "installed" locally to your project. 
 It will not be installed globally on the whole system (and it will not interfere with any Node/npm installations already 
 present). 
+If you want to use the existing Node in your system, simply add a `nodeExecutablePath` points to the existed node executable.  
 
 ```xml
 <plugin>

frontend-plugin-core/src/main/java/com/github/eirslett/maven/plugins/frontend/lib/NodeExecutorConfig.java

@@ -33,6 +33,11 @@ public InstallNodeExecutorConfig(InstallConfig installConfig) {
 
   @Override
   public File getNodePath() {
+    String nodePath = System.getProperty("nodeExecutablePath");
+    if (nodePath != null) {
+      return new File(nodePath);
+    }
+
     String nodeExecutable = getPlatform().isWindows() ? NODE_WINDOWS : NODE_DEFAULT;
     return new File(installConfig.getInstallDirectory() + nodeExecutable);
   }