Add credits to about section

components/settings/about.js

@@ -11,6 +11,10 @@ export default class AboutSection extends Component {
           <AppText style={styles.settingsSegmentTitle}>{`${labels.aboutSection.title} `}</AppText>
           <AppText>{`${labels.aboutSection.segmentExplainer} `}</AppText>
         </View>
+        <View style={styles.settingsSegment}>
+          <AppText style={styles.settingsSegmentTitle}>{`${labels.credits.title} `}</AppText>
+          <AppText>{`${labels.credits.note}`}</AppText>
+        </View>
       </ScrollView>
     )
   }

i18n/en/settings.js

@@ -85,5 +85,9 @@ export default {
     note1: "drip applies NFP's rules for calculating infertile days at the start of the cycle (see the ",
     link: 'wiki',
     note2: " for more info). However, drip does not currently apply the so called 20-day-rule, which determines infertile days at the cycle start from past cycle lengths in case no past symptothermal info is available."
+  },
+  credits: {
+    title: 'Credits',
+    note: 'Thanks and lots of <3 to all of our contributors, as well as, and especially,  Susanne Umscheid for the wonderful visual and logo design, and Paula Härtel for the symptom icons'
   }
 }