add plugins folder.

.gitignore

@@ -7,3 +7,6 @@ runtime/fonts/*
 
 runtime/icon-theme/*
 !runtime/icon-theme/.gitkeep
+
+plugins/*
+!plugins/.gitkeep

build

@@ -64,6 +64,11 @@ rm -f bin/plugins/*
 #
 # build plugins
 for plugPath in ./plugins/*; do
+    if [ ! -d $plugPath ];
+    then
+        continue
+    fi
+
     pushd $plugPath
 
     echo "Building plugin: $plugPath"