facebook-github-bot feature wording improvement

Summary:As mkonicek suggested in facebook#6544
Closes facebook#6549

Differential Revision: D3074890

Pulled By: mkonicek

fb-gh-sync-id: 26be47b948ed33f1569f7d6f5369da20700d0dd6
shipit-source-id: 26be47b948ed33f1569f7d6f5369da20700d0dd6

bots/IssueCommands.txt

@@ -32,6 +32,10 @@ close
 comment Okay, reopening this issue.
 reopen
 
+@facebook-github-bot feature
+comment Hey {issue_author}! Thanks for opening the issue, however it looks like a feature request. As noted in the [Issue template](https://github.com/facebook/react-native/blob/master/ISSUE_TEMPLATE.md) we'd like to use the GitHub issues to track bugs only. Can you implement the feature as a standalone npm module? If not consider sending a pull request or a create an entry on [Product Pains](https://productpains.com/product/react-native). It has a voting system and if the feature gets upvoted enough it might get implemented.
+feature
+
 @facebook-github-bot feature
 comment Hey {issue_author}! Thanks for opening the issue, but we are closing it because it looks like a feature request. If this can't be implemented as a standalone [npm](https://npmjs.org) module free to send us a Pull Request or create an entry on [Product Pains](https://productpains.com/product/react-native). It has a voting system and if the feature gets upvoted enough it might get implemented.'
 feature