Add issue bot close command and add janicduplessis to the bot whitelist

Summary:Adds a generic close command to the issue bot and add myself to the task force list.
Closes facebook#6349

Reviewed By: mkonicek

Differential Revision:D3021271
Ninja: RN GitHub bot only

Pulled By: mkonicek

fb-gh-sync-id: dbdce129c4287173a4c16889c16bb5ed9ded5f79
shipit-source-id: dbdce129c4287173a4c16889c16bb5ed9ded5f79

bots/IssueCommands.txt

@@ -1,4 +1,4 @@
-React Native GitHub Issue Task Force: brentvatne, chirag04, christopherdro, corbt, dsibiski, grabbou, ide, jsierles, kmagiera, Kureev, lelandrichardson, satya164, skevy
+React Native GitHub Issue Task Force: brentvatne, chirag04, christopherdro, corbt, dsibiski, grabbou, ide, jsierles, kmagiera, Kureev, lelandrichardson, satya164, skevy, janicduplessis
 
 @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.
@@ -24,6 +24,10 @@ add-label {match0}
 comment Closing this issue as more information is needed to debug this and we haven't heard back from the author. Once there's more information we can reopen the issue.
 close
 
+@facebook-github-bot close
+comment {author} tells me to close this issue. If you think it should still be opened let us know why.
+close
+
 @facebook-github-bot reopen
 comment Okay, reopening this issue.
 reopen