Merge pull request r-spacex#303 from zacdevil10/master

Add SpaceX - Launch Tracker to apps doc

docs/apps.md

@@ -25,3 +25,4 @@
 | [AV-SpaceX DB](https://av-spacex.surge.sh/) | API/Website | [Aswin Varghese](http://aswinvarghese.com) | [Github]() | |
 | [SpaceX Guide Site](https://spacex-guide.weebly.com) | Website | Jared-Base | N/A | [Mission Control Page](https://spacex-guide.weebly.com/mission-control.html) |
 | SpaceX Info | Alexa Skill | Andrew Shapton | [Github](https://github.com/alshapton/Space-X-Info-Alexa.git) | Invoke with "Alexa Open SpaceX Info" |
+| [SpaceX - Launch Tracker](https://play.google.com/store/apps/details?id=uk.co.zac_h.spacex) | Android App | [Zac Hadjineophytou](https://github.com/zacdevil10) | [GitHub](https://github.com/zacdevil10/spacex-launch-tracker) |