add submodule for volume plus several other changes

[awesome-config] / volume-control

diff --git a/volume-control b/volume-control
new file mode 160000 (submodule)
index 0000000..56dee54
--- /dev/null
+++ b/volume-control
@@ -0,0 +1 @@
+Subproject commit 56dee54d7711a8be619d339bf66747db2e13cd17