Add LICENSE and improve coding style

LICENSE

@@ -0,0 +1,14 @@
+            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+                    Version 2, December 2004
+
+ Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>
+
+ Everyone is permitted to copy and distribute verbatim or modified
+ copies of this license document, and changing it is allowed as long
+ as the name is changed.
+
+            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. You just DO WHAT THE FUCK YOU WANT TO.
+

checkconnection.sh

@@ -9,8 +9,8 @@ testsite1="https://datenkastl.de/.connectivity-check"
 testsite2="http://captiveportal.kuketz.de"
 
 # Testdomains for ping
-testdomain1=datenkastl.de
-testdomain2=metager.de
+testdomain1="datenkastl.de"
+testdomain2="metager.de"
 
 #Path of curl and ping
 curlbin=`type -tp curl`

restartmodem.sh

@@ -15,9 +15,11 @@ interface="LTE"
 #
 
 # Restart Modem
+echo "restart Modem..."
 ifdown $interface
 sleep 5
 ifup $interface
+echo "Modem restarted..."
 
 # Log the time
 echo "Interface $interface restarted at $(date)" >> /var/log/restartmodem.sh