update version

Author: somas95

data/ui/About.ui

@@ -8,7 +8,7 @@
     <property name="window_position">center</property>
     <property name="type_hint">dialog</property>
     <property name="program_name">Uberwriter</property>
-    <property name="version">2.1.0</property>
+    <property name="version">2.1.1</property>
     <property name="copyright" translatable="yes">Copyright (C) 2018, Wolf Vollprecht</property>
     <property name="website">http://uberwriter.github.io/uberwriter</property>
     <property name="website_label" translatable="yes">Uberwriter website</property>