added implementation of --print-wifi

And added it to the README.
Cleaned up the docstring in naxalnet/__main__.py

README.md

@@ -122,6 +122,7 @@ wifi ap (also called wifi hotspot) on one of them.
 
 Connect two wifi adapters on a device and [start naxalnet][startnx].
 Now an ap will be created on one of the adapters.
+Type `naxalnet --print-wifi` to get the WiFi SSID and password.
 
 If you had set up internet access on one of the peers, internet
 can be accessed from the AP.

naxalnet/__init__.py

@@ -15,6 +15,13 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+"""
+naxalnet
+========
+
+Create mesh networks with batman-adv, systemd-networkd and iwd.
+See README.md for documentation.
+"""
 
 # GUIDE FOR CHANGING __version__
 #
@@ -29,4 +36,4 @@
 #
 # In case you forgot to add a version, put the next number
 # in the next commit
-__version__ = "0.2.0a3.dev1"
+__version__ = "0.2.0a3.dev2"

naxalnet/__main__.py

@@ -16,11 +16,9 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 """
-naxalnet
-========
-
 If called as python -m naxalnet, this file makes naxalnet run like
-it was called from the commandline.
+it was called from the commandline. Try:
+    python -m naxalnet --help
 """
 
 from naxalnet.scripts import here_be_dragons

naxalnet/scripts.py

@@ -105,6 +105,12 @@ def setup_devices(args):
             ap_device.start_ap(args.ap_ssid, args.ap_passwd)
 
 
+def print_wifi(args):
+    print("Mesh name:", args.adhoc_name)
+    print("SSID:", args.ap_ssid)
+    print("Password:", args.ap_passwd)
+
+
 def here_be_dragons():
     """
     This function is run every time you
@@ -112,6 +118,10 @@ def here_be_dragons():
     """
     args = parse_args()
 
+    if args.print_wifi:
+        print_wifi(args)
+        sys.exit(0)
+
     try:
         copy_files(args)
     except PermissionError as error: