Add gantman to contributors

Summary: Closes https://github.com/facebook/react-native/pull/15009

Differential Revision: D5420862

Pulled By: hramos

fbshipit-source-id: ecf1c7054f9b6792e606e58e37b109f0af62c9c3

bots/IssueCommands.txt

@@ -1,4 +1,4 @@
-React Native GitHub Issue Task Force: AndrewJack, astreet, bestander, brentvatne, browniefed, cancan101, charpeni, chirag04, christopherdro, corbt, cosmith, damusnet, DanielMSchmidt, davidaurelio, dmmiller, dsibiski, foghina, frantic, geirman, grabbou, gre, ide, janicduplessis, javache, jaygarcia, jsierles, kmagiera, knowbody, kmagiera, Kureev, lelandrichardson, martinbigio, melihmucuk, mkonicek, ncuillery, rmevans9, rt2zz, ryankask, satya164, skevy, vjeux
+React Native GitHub Issue Task Force: AndrewJack, astreet, bestander, brentvatne, browniefed, cancan101, charpeni, chirag04, christopherdro, corbt, cosmith, damusnet, DanielMSchmidt, davidaurelio, dmmiller, dsibiski, foghina, frantic, gantman, geirman, grabbou, gre, ide, janicduplessis, javache, jaygarcia, jsierles, kmagiera, knowbody, kmagiera, Kureev, lelandrichardson, martinbigio, melihmucuk, mkonicek, ncuillery, rmevans9, rt2zz, ryankask, satya164, skevy, vjeux
 
 @facebook-github-bot answered
 comment Closing this issue as {author} says the question asked has been answered. Please help us by asking questions on [StackOverflow](http://stackoverflow.com/questions/tagged/react-native). StackOverflow is amazing for Q&A: it has a reputation system, voting, the ability to mark a question as answered. Because of the reputation system it is likely the community will see and answer your question there. This also helps us use the GitHub bug tracker for bugs only.