Review and add arjo_modules at version 0.6.0. #518

.gitmodules

@@ -255,3 +255,6 @@
 [submodule "repos/aP-Modules"]
 	path = repos/aP-Modules
 	url = https://github.com/aptrn/aP-Modules.git
+[submodule "repos/arjo_modules"]
+	path = repos/arjo_modules
+	url = https://github.com/ArjoNagelhout/arjo_modules

manifests/arjo_modules.json

@@ -0,0 +1,10 @@
+{
+  "name": "arjo_modules",
+  "author": "Arjo Nagelhout",
+  "license": "CC-BY-NC-4.0",
+  "authorEmail": "arjo.nagelhout@gmail.com",
+  "authorUrl": "https://github.com/ArjoNagelhout",
+  "manualUrl": "https://github.com/ArjoNagelhout/arjo_modules/blob/master/README.md",
+  "sourceUrl": "https://github.com/ArjoNagelhout/arjo_modules",
+  "repoVersion": "0.6.0"
+}

repos/arjo_modules

@@ -0,0 +1 @@
+Subproject commit 78fe7fa0c0bb560980217f751106c982a5e85bf7