make sure plugins can be loaded from the current directory if lessc is installed globally

lib/less-node/plugin-loader.js

@@ -1,3 +1,4 @@
+var path = require("path");
 /**
  * Node Plugin Loader
  */
@@ -47,6 +48,25 @@ PluginLoader.prototype.versionToString = function(version) {
     return versionString;
 };
 PluginLoader.prototype.tryRequirePlugin = function(name) {
+    // is at the same level as the less.js module
+    try {
+        return require("../../../" + name);
+    }
+    catch(e) {
+    }
+    // is installed as a sub dependency of the current folder
+    try {
+        return require(path.join(process.cwd(), "node_modules", name));
+    }
+    catch(e) {
+    }
+    // is referenced relative to the current directory
+    try {
+        return require(path.join(process.cwd(), name));
+    }
+    catch(e) {
+    }
+    // unlikely - would have to be a dependency of where this code was running (less.js)...
     if (name[0] !== '.') {
         try {
             return require(name);
@@ -54,11 +74,6 @@ PluginLoader.prototype.tryRequirePlugin = function(name) {
         catch(e) {
         }
     }
-    try {
-        return require("../../../" + name);
-    }
-    catch(e) {
-    }
 };
 PluginLoader.prototype.printUsage = function(plugins) {
     for(var i = 0; i < plugins.length; i++) {