Merge pull request #387 from knalli/patch-1

Provide and output proper existing error message

lib/plugin.js

@@ -176,6 +176,10 @@ Plugin.installed = function() {
         pjson = Plugin.loadPackageJSON(pluginPath);
       }
       catch (err) {
+        if (name.substring(0,11) === 'homebridge-') {
+          // show warning only if module starts with prefix
+          log.warn("Warning: skipping plugin found at '" + pluginPath + "' because of: " + err.message);
+        }
         // swallow error and skip this module
         continue;
       }