[#20] Add missing translation key.

closes #20

app/build.gradle

@@ -16,7 +16,7 @@ def keystoreProperties = new Properties()
 def versionProperties = new Properties()
 
 def versionMajor = 2
-def versionMinor = 0
+def versionMinor = 1
 
 // Load your keystore.properties file into the keystoreProperties object.
 keystoreProperties.load(new FileInputStream(keystorePropertiesFile))

app/src/main/res/values-de/strings.xml

@@ -22,5 +22,6 @@
     <string name="active">Aktives Spiel</string>
     <string name="inactive">Vergangene Spiele</string>
     <string name="menu_counter">Counter</string>
+    <string name="menu_about">About</string>
 
 </resources>