[doc] run bitmask-systray from the repo

README.md

@@ -2,14 +2,18 @@ Install it
 ----------
 
 Install dependencies:
-
+```
   # apt install libzmq3-dev libgtk-3-dev libappindicator3-dev golang
+```
 
-Install the systray:
-
-  $ go get 0xacab.org/leap/bitmask-systray
+Build the systray:
+```
+  $ git clone 0xacab.org/leap/bitmask-systray
+  $ cd bitmask-systray
+```
 
 Run bitmask and the systray:
-
+```
   $ bitmaskd
-  $ ~/go/bin/bitmask-systray
+  $ ./bitmask-systray
+```