A collection of high-level tools to build Github bots using Probot



_A collection of high-level tools to build Github bots using
Probot._
- downloadCode
downloads the given SHA and
extracts it into a tmp directory
- downloadPullrequestPatch
downloads the patch for the given pull request
- findPatchLine
Takes a line number in a file
and a patch downloaded by the downloadPatch function. Returns the line number
that Github expects for comments on this patch according to
https://developer.github.com/v3/pulls/comments/#create-a-comment. Returns
undefined if the patch doesn't contain the given line number.