Fix #56 - Add info about c:geo takeover to first start screen (#59)

* Fix #56 - Add info about c:geo takeover to first start screen

* Typo and formatting of cs_first.html

src/main/assets/en_first.html

@@ -1,4 +1,19 @@
 WhereYouGo is an unofficial client for Wherigo Geocaching. It uses offline vector maps, alternatively Locus can be used to display maps.
+<br/>
+<br/>
+<b>Important note:
+<br/>
+The development of WhereYouGo was no longer continued by the last open source development team. After contacting the original author, the c:geo team has been able to take over the source code to make it available again for the open source community to allow further bugfixing and enhancement of WhereYouGo.
+<br/>
+In a first step we managed to fix the download function for cartridges, thus restoring the original functionality.
+<br/>
+<br/>
+For further development however we need help of the Geocaching community:
+<br/>
+If you are interested to further improve WhereYouGo and have some knowledge of Java, check out the new <a href="https://github.com/cgeo/whereyougo">WhereYouGo repository</a> or send us a mail to <a href="mailto:[email protected]?subject=WhereYouGo">[email protected]</a>.
+</b>
+<br/>
+<br/>
 Cartridges for the game can be downloaded at
 <br/>
 <a href="https://www.wherigo.com">www.wherigo.com</a>