README.md: Minimal example

Author: jfsmig

README.md

@@ -4,6 +4,11 @@ Gridinit is a tool used to manage non-daemon processes.
 
 ## Build
 
+```
+cmake -D GRIDINIT_SOCK_PATH=/tmp/gridinit.sock .
+make
+```
+
 ### Dependencies
 
 * cmake, make, gcc
@@ -16,3 +21,18 @@ Gridinit is a tool used to manage non-daemon processes.
 | ----- | ------- | ----------- |
 | GRIDINIT_SOCK_PATH | /var/run/gridinit.sock | Path used for the socket on both server and client side, when no path is specified in the configuration. |
 
+## Try it
+
+```
+./gridinit -d ./gridinit.conf
+./gridinit_cmd status
+./gridinit_cmd status2
+./gridinit_cmd status3
+./gridinit_cmd status @NS0
+./gridinit_cmd status @NS1
+./gridinit_cmd status @local
+./gridinit_cmd status @local @NS1 @NS0
+./gridinit_cmd stop
+./gridinit_cmd start
+```
+