add task feature

testdbus.py

@@ -0,0 +1,8 @@
+def active_workspace():
+
+    workspaces = subprocess.check_output(["wmctrl", "-d"]) \
+                           .decode("utf-8").strip("\n").split("\n")
+
+    for workspace in workspaces:
+        if workspace[3] == "*":
+            return int(workspace[0])